For most materials there is a recommended chip load.If you are running at 18000 RPM using a 25mm cutter with two flutes, and a recommended chip load of 0.1 mm/tooth:Feed = 2 x 0.1 x 18000 = 3600 mm per minIf the RPM were increased to 24000 RPM the new feed rate would work out to be:Feed = 2 x 0.1 x 24000 = 4800 mm per minBased on this equation, as RPM increases, feed rate will also increase if all other settings remain the same. Will be running tests , but as a starting point. Whiteside RU2100 Standard Spiral Bit with Up Cut Solid Carbide 1/4-Inch Cutting Diameter and 1-Inch Cutting Length is a highly rated bit that has over 200 reviews and 4.5 stars on Amazon. Whitside strives to improve its product line and achieve superior quality through new technology, improved production techniques, and continued research and development efforts. Keeping in mind that we dont want to push the bit any faster than roughly 200ipm, if we wanted to use a 1/2 inch 4 flute bit, we could solve for spindle speed rather than feed rate. If you are using the Makita RT0701C (110v) router that comes with X-Carves purchased after November 2021, the spindle speed varies from 10,000 RPM at the lowest setting (1) up to 30,000 RPM at the highest setting (6). At the end of the day, Eagle and Whiteside had their scores tied, rising to the top. by LittleGreyMan Mon Oct 08, 2018 2:55 pm, Post 3) Do not remove safety guards, and be sure to always feed against the cutter rotation. The comment form collects your name, email and content to allow us keep track of the comments placed on the website. So, using the above example, a 1-inch router bit spinning at 20,000 rpm cuts at a rate of 59.5 mph. If so, any pointers? Most machine controllers allow you to adjust the feed rate while a program is running and by listening to the sound the cutter makes this can be a good way of optimizing the parameters.Feed rate is calculated using the following equation:Feed = N x T x ZN = number of cutting edges (flutes)T= chip load (chip per tooth) is the amount of material, which should be removed by each tooth of the cutter as it rotates and advances into the work. Smaller chips are easier on your machine and tools but can cause too much heat. That cutting speed occurs at the edge of the bit where it does most of its work. CNC Spoilboard Surfacing Router Bit 1/2" Shank, Slab Flattening Router Bit 304806024256. . 2) Always wear eye and ear protection along with dust masks. Fixed speed routers have one speed usually near the high end of the RPM range. When chip load is too high, the tool will deflect creating a bad surface finish and, in extreme. These files can be loaded into Vectric software (version 8.5 and later) including Aspire, VCarve, and similar software formats. It is highly durable thanks to its carbide tip construction and definitely the most affordable brand. Instead of using wireframe geometry or curves and lines as the primary source of input, a 3D toolpath uses surfaces called drive surfaces. In order to achieve the desired outcome it is often necessary to use a containment boundary. They are represented on the screen by lines and curves which represent the path of the bottom center of the cutting tool. With the chipload set to 0.01 it is possible to step down and over the diameter of the bit, but that is the absolute maximum and should only be brief moments in the cut. Feed rate is the surface speed of the cutting tool in inches per min, spindle speed is the rotational speed of the cutting tool in revolutions per min, number of flutes and cutter diameter are determined by your tool. Great advice! Feed rate go 40 ipm to 100 ipm. 2-inch diameter bit = 3.142 x 2 in. Because Im increasing the cross-sectional area of the bit engaged with the material, I should decrease the chipload by the same amount so the new chipload would be 0.00333 and return a new feed rate of 30ipm. MCLS router bits are great for their value but are shunned by most woodworkers because they lack the ability to produce professional level work. 0000002577 00000 n The calculator will automatically provide the necessary speed and feed in the green fields. Their design ensure that they maintain their balance even at high speeds which in turn minimizes costly errors. Understanding the right speeds and feeds for your tool and operation before you start machining is critical feed Rate = RPM * IPT * Z RPM: rotations per minute, the revolution speed of spindle I admit that I got danger close to hitting my recessed brass threaded inserts (that was the biggest reason I was nervous to do this) but I got lucky. For some reason its been exceedingly difficult to modify this article. Larger chips pull away more heat, which means its easier on the tool and prolongs the life of the bit. Here is a link with a corrected and more detailed explanation. Please send a link if you have (although Im in South Africa). To ensure the best results, setting the best router bit speed is the place to start. For the Whiteside 6210, the link from the image goes to the correct amazon link, but if you click on the link displaying the price . Basic Concepts: Use the Sweet Spot to understand how to adjust your feeds and speeds. Though this is a common remark, it is not a disadvantage as each of these sets comes with the best, industrial-grade premium carbide bit profiles that last a long time and have a life-time warranty. Heres a general guide, or router bit speed chart to get you started. What would be the best way to adjust the feed and speed? I have found that I cannot exceed 50 inch/min and get good results. Click "Import a tool database", select the file you just downloaded, and import it * .vtdb suffix file Download (Updated to 202201125) Maker-written books designed to inform and delight! Testing voltage follows a simple process. mail me sunil_jangra07@yahoo.com Thats a large endmill, so youll want to move reasonably quickly, and at a suitable RPM. This speed is termed 'spindle speed' and is directly related to the feed rate or surface speed, which most machines are capable of doing up to about 200ipm. You just draw your spoil board in Carbide Create and create a toolpath to pocket the area. I am assuming this is 1/4 shank so max doc should be .25. Do you have this bit? Dont try larger bits or use any after-market devices designed to lower the RPM. Sometimes it can be more efficient to use a higher feed rate and two or more passes rather than a single cut at a low feed rate. Feeds & Speeds way out for hardwood? 0000006451 00000 n There are certain parameters that must be considered, before setting up any file for cutting if you are to accomplish the finish and accuracy required. Membership connects and supports the people and projects that shape our future and supports the learning There was a horrible smell during the cut and once completed, i noticed that it wasnt just the wood i could smell, but my Makita router had started smoking and was extremely hot to the touch. 0000000016 00000 n 0000005178 00000 n Depth of cut will effect edge finish as well as tool life. Usually a depth of cut that equals the radius of the cutter is a good starting point when cutting non-ferrous metals. Chips will help by removing the heat produced in the cutting process thus increasing tool life and improving edge quality. What sort of bit would you use as a clearance tool here? You will be pleased every time you use one of these fine products. startxref With small bits you want more stepover do to the smaller scalping impact. Router bits running faster than their RATED SPEED can break and fly apart. Feedrate ? Whiteside Router Bits CNC Spoilboard Surfacing Router Bits 4 Wing Carbide Tipped CNC Spoilboard Cutter, 2" Dia, 1/2 Shank, Whiteside 6220 4 Wing Carbide Tipped CNC Spoilboard Cutter, 2" Dia, 1/2 Shank, Whiteside 6220 Loading zoom Retail: $94.34 Our Low Price: $80.19 (You save $14.15) SKU: 412-6220 Brand: Whiteside Reviews: Availability: 6) Whiteside Machine Company assumes no responsibility for defects, damage, or injury (direct or indirect) caused by misuse, abuse, alteration or modification of any product (including sharpening). I also believe you may be pushing the bit as your feed rates are low. This is why they make an ideal choice for you. Whiteside is proud to supply the industry with our superior line of drilling and boring tools. Therefore depending on the diameter of the tool, if the RPM and number of cutter edges stay the same chip load will increase with a larger diameter cutter, thus the feed rate will also increase. Top Quality, Industrial Grade Router Bits. Router: 16k rpm Depth of cut: 0.015 Speed: 90 in/min Plunge: 12. (Please refer to the manufacturers recommendations and keep in mind the speeds they suggest are maximum): Generally, the rim speed will be around 100 to 120 miles per hour. Only on 3d carving and ruffing passes I up the speed to 70 inch/min. We attended [], What is a scroll saw used for? Conventional milling or cutting forward is the most commonly used method. Whiteside router profiles seem to have achieved the impossible by having no disadvantages. To add a .tool file, open the Tool Database in your software after safely downloading the .tool file. Its good to keep in mind that you dont have to remove all of the material in one fell swoop. Carbide tip router profiles are harder and can hold the edge much longer. Apart from Whiteside there are several other companies that manufacture quality carbide router bits. Whiteside 401 Basic Router Bit Set, 1/2-Inch Shank, 7 Pieces is a handy toolbox that comes with all the commonly used router bits. Now we can calculate the rim speedor the speed at any point along the outside edge of the cutting router bitusing the following equation: Rim Speed = circumference x router speed (RPM). Or it will not stay within the vector lines. There are many brands that sell router bits, many more to put to the test and experiment with. Id be happy to cover 3D in more depth at a later date, but for now I want to discuss containment boundaries. If you see even the slightest hint of damage, get a new bit. With this method the work is fed against the rotation direction of the cutter. By downloading any of these .tool files, you acknowledge the safety information below. For this machining method the workpiece and the machine must be rigid. The fan speed is the same as the spindle speed, if you are running it at low RPM that will reduce the cooling of the router. I did not buy one for use in the Onefinity. 1/4" CD, 1/4" SH, 3/4" CL (for pocketing and profiles) Pass Depth: 0.125", Stepover .1 (40%), Spindle speed: 18,153, Feed Rate: 137 inch/min, Plunge Rate: 67 inch/min. I have a Whiteside 6210 1" carbide tipped Spoilboard Surfacing router bit. And at 24,000 rpm. If asked which brand is for router bits, Freud would definitely be the answer but when you look at value for money and all the other features Whiteside stands out. 1-800-535-4486 Join Our Email Program! Whiteside SC70 CNC Machine 30-Degree Engraving Bit Specifications: 30-degree cutting profile, pencil point tip and 1/4" shank Designed for engraving and sign-making. After a bit of experimentation I have found that a chipload of 0.005inches at 18000rpm resulting in a feed rate of 45ipm is optimal for my needs. Whenever you use a router, inspect the bit first for signs of damage. If money isnt an issue and you are mostly cutting finish grade plywood, I really like the Freud 77-202 or 77-204. To wrap up, the quality of Whiteside router bits affect the quality of the cuts you make and ultimately the overall outcome of your project. This topic was automatically closed 30 days after the last reply. Theres one key thing to note about Pro Tool Reviews: Were all about the professional tool user and tradesman! 0000005228 00000 n = 3.142 in. Ive been trying to get this changed. by cconway Sat Oct 06, 2018 4:25 pm, Post 0000012833 00000 n Then use our FREE comprehensive technical support to help you optimise the speeds and feeds appropriate to your equipment and materials. accessible by all ages and skill ranges. You are 100% correct. Been a while - things have been going ok, with the machine until I tried to make a batch of trays yesterday. Optimizing feed rates and speeds: 1. To understand just how the bit diameter affects speed, let me walk you through a few examples. Feed rate 80-120 IPM at .1-.15 DOC up to 50% stepover 1954 0 obj <> endobj Raster area clears in 3" circles. I'm on the Dewalt DWP611, I think its minimum spindle speed is 16k unless I'm missing something. The formula for calculating rim speed has you finding the circumference of the bit, calculate that to inches per minute, and eventually translating it to miles per hour. One of the most important of these factors is the Chipload per Tooth (Cpt). Let the tool do the work and feel the tool. Have definitely seen it done online somewhere so thought Id give it a go. The spiral up/down gives a compression cut that eliminates fraying, splintering, and fuzzy edges. Whether you are a beginner or professional woodworker, choosing the right router bits can be a daunting task, for a router is toothless without router bits. Ill make sure to do that on my next bit speed video! You could also use 1/4 (6.35 mm) or 3/8 (9.525 mm). 2. This is a similar symptom to your router speed being too fast, albeit without the burning or additional damage made to the wood. JavaScript seems to be disabled in your browser. Feeds and speeds are usually all set in the programming software that is used to create the machine program. A standard router bit spins clockwise. The feed rate used depends upon a variety of factors, including power and rigidity of the machine, rigidity of part hold-down, spindle horsepower, depth and width of cut, sharpness of cutting tool, design and type of cutter, and the material being cut. The idea is to step down by level first, so cut all your parts down to the first step, then to the second step and so on, leaving a thin layer of veneer at the bottom of each cut. I would use an end mill (which is good for plunging) and a high speed. A free program that lights childrens creative fires and allows them to explore projects in areas such as arts & I ended up doing some tests for myself. For most materials there is a recommended chip load. For my two cents worth I also have a Shark Pro 4 with water cooled spindle but 25 x 25. These router bit fall short in terms of longevity. Click here for the Materials Guide. When machining non-ferrous materials, climb milling should be used to achieve a good finish. Another factor that affects chip load is the diameter of the cutter. To obtain the optimum Chipload, you must consider these variables, along with the machine and materials you intend to cut. Begin the cut at the center of your shape and work out in a spiral-like pattern, this will provide support for your router if your shape is larger than its base. Have been told to run my 1/4 em at 200imp through Birch plywood by onefinitycnc themselves. In this way, you can maintain a safe and effective rim speed without putting any undue pressure on the tool or yourself. In the Vectric software (in the case of Aspire), on the toolbar go to "Toolpath", select "show toolpaths tab", then click "Display Tool Database" 3. Stepover 0.45in Shop now or call 563-387-7315 Whiteside 703 1/4" SH Ball Nose CNC Router Bit Set Item 161282 $118.99 Add to Cart Quick View Whiteside 705 1/4" SH Starter CNC Router Bit Set Item 161283 $198.99 Add to Cart Details Add to Cart Details Make your designs come to life with the Whiteside 1/4" Up Cut Spiral CNC Bit. 0000001624 00000 n Starting out, dont worry too much about this. For small bits below 1/8 inch start with 0.005 and increase from it there. Avoiding a few broken tools or getting more life out of them might make it worth it to you. Their downloadable, detailed catalog makes it easy to understand the uses of each of these bits which are also subcategorized to help you with making the right choice for the project. There are many resources available to help determine suitable settings for particular material / router bit combinations. Whiteside router bits have surely proven to be a good investment. I think something is wrong with the feedrate formula. This Bowl & Tray tool has carbide flutes for extra strength, and is made by Whiteside, so you can be sure it is a quality cutting tool. . Under ideal conditions it is usually suggested that the actual feed rate be set to approximately one-half the calculated amount and gradually increased to the capacity of the machine and the finish desired.Once you have determined what feed and speed to start with, there are other factors to be taken into consideration. Keep hands, body, clothing and hair away from the cutter. In the words of a trusted user The last cut was as perfect as the first. You cant clock that, so use the RPM as a proxy for rim MPH. That can result in a loss of control or worse. Its helpful to make a chart so you can quickly find the numbers you are looking for. Committed to quality, this family-owned and operated company has a plethora of woodworking tools for you to choose from, be it a spiral router bit to a CNC set and accessories like bearings. Maybe because you have imperial history and also many goods are imported from the U.S., you use imperial units too? These bits have high hook and relief angles for better chip ejection giving them superior edge quality. Copyright 2008-2023 Pro Tool Reviews, LLC. The Whiteside technical support recommends 100 IPM and 15,000 rpm. Thank for the reply and the useful info. Tape Measure Markings: What Are They For? Lol I used the .tool file. It gives a shear cutting edge and the up-cut design provides the control with hand and table routing. Hundreds of users on here surfacing their wood with a makita trimmer and surfacing bit? For a rough guide, here's a typical maximum router bit speed chart: Router Bit Diameter Maximum Speed Up to 1" 1" to 2" 2" to 2-1/2" 2-1/2" to 3-1/2" 22,000 - 24,000 rpm 18,000 - 22,000 rpm Save my name, email, and website in this browser for the next time I comment. Gift the gift of Make: Magazine this holiday season! This particular cut was a hard Blackwood. Use Cutter Shop's CNC router Feeds and Speeds Calculator to determine approximate router production throughputs. - Pause the machine and check the router bit and settings - Cut too deep in a single pass. Whiteside 470 Undersized Plywood Dado 3 Piece Set with 7/32-Inch,15/32-Inch, and 23/32-Inch Cutting Diameter with 1/2-Inch Shank:it is a great choice for hardwood but a tight fit for most plywood. Because Im stepping down almost 3/8 of an inch while cutting the full 1/4 inch width of the bit in each pass, I would have to lower the feed rate. initiatives for the next generation of makers. As a beginner, it would be to start with MCLSs starter kits so you get the hang of how to use these tools at a reasonable cost but as you move from beginner to advanced a switch to Whiteside is recommended. xref Whiteside RD2100 Standard Spiral Bit with Down Cut Solid Carbide 1/4-Inch Cutting Diameter and 1-Inch Cutting Length is a bit that is known to hold up even if you cut through a 48 linear feet of 3/4 medium density fiberboard. Do not leave the tool running. trailer It will not allow you to save your files, but you can experiment and learn for free. For this cut, i kept the feed and the plunge rate the same to try and avoid the slow ramping (spoiler: it didnt help). I have been through dozens of pattern bits, and there is absolutely no comparison with this beast. It definitely does not disappoint. They have a well-detailed catalog that can help you figure out what router bit profiles work for your project. These bits feature a TiCo (Titanium and Carbide) tip which is a high-end material that is tri-metal blazing. Your choice here will be recorded for all Make.co Websites. The premier publication of maker projects, skill-building tutorials, in-depth reviews, and inspirational stories, 0000010874 00000 n by cconway Sat Oct 06, 2018 4:59 pm, Post 0000014372 00000 n Whiteside. The many nuances of routing involve setting the right router bit speed. I have a Whiteside Router Bits 1570 Point Cutting Round Over Bit with 3/16-Inch Radius 3/8-Inch Cutting Diameter and 3/8-Inch Cutting Length that I've been using with my Seadek tri-color 9mm EVA foam and it's been doing fairly well, definitely requires some cleanup work with a dremmel but I've been experimenting with feeds and speeds 575mm feed/ incense powder. 0000007999 00000 n Freud is a highly dependable brand that delivers quality. This is a rule of thumb, but its a good starting point for feed and speed calculations. The bit will take too big of a bite and move my board. Feeds; Speeds; Grades. That same router, however, drives a 3-inch bit at 178.5 mph at the cutting edge. 0000021203 00000 n Founded in 1970 as a general-purpose machine shop, this company was involved in making repairs and special parts for the furniture and woodworking industry. Okay so what the heck am I doing wrong here then. The process described in the handheld example above is called a pocket toolpath. 0000000774 00000 n Also, always wear your safety glasses. For example, theres a small arrow next to []. As for the pilot holes, I want to do 1/8" pilots about 1/4" deep. Only use the .tool file for the specific Whiteside part number. %%EOF Find a special something for the makers in your life. 0000001199 00000 n The speeds and feeds calculator has two modes of operation: preset mode and manual mode. x 20,000 rpm = 188,490 in/min. When trying to hone in on your feeds and speeds with a new bit, guess as best you can using the feeds and speeds formula and touch the bit as soon as it stops spinning after making a few cuts (remember: safety first), it should be warm, maybe a little hot to the touch, but it should not burn you. The surfacing bit is a necessary bit to. Use your ears too, the tool should sound good when cutting trust your gut. CHAPTER 1. Its possible to damage your spindle by pushing it too hard, remember to always warm up the spindle for at least 10 minutes before making any cuts. What we get are results expressed as inches per minute. The hp of the makitia will not handle long uses of the weights of these bits and will burn the windings out trying to do it. PS if you are less than .24 step over you wont get the ridges at the bottom. 2113 0 obj <>stream It was never engineered to be a spindle and its duty cycle was never meant to be used more than a few minutes at a time. A typical Sweet Spot looks like this schematically: The green areas reflect ideal Sweet Spot matches for a material and cutting conditions. Router bits and cutters for cabinetmakers. I would only use the surfacing bit to surface your wasteboard and use smaller bits for everything else. I was getting a lot of chatter and stopped the cut. If you have access to one, go play with it before attempting to create toolpaths on the computer. There are 4 main types of flute patterns for router bits, plus many types of specialty bits. You can be sure to get your moneys worth from this product. If I were cutting 3/4 in plywood it would actually measure somewhere around 0.72 inches, I would step down twice, 0.34 per pass leaving 0.04 inches plus 0.02 breakthrough for the last toolpath to remove. Save over 40% off the annual cover price for a full year (4 issues) of Make. The *Astra Coated* Whiteside 6210 1/4 " router flattening bit can be used in both a CNC machine for spoilboard or slab flattening or in a handheld router on a flattening jig. 3. A larger cutter will be able to handle a larger chip load. Its sharpness and large shear angle allows it to cut up/down the grain with ease. CNC Router Bits and How to Use Them [Definitive Guide] CNCCookbook's 21 Most Popular Articles for 2020-2021; Cutter-Specific Guides; . We created a handy router bit speed chart for you to use as needed. One thing to remember is to make chips not dust. We promise we wont spam As a general rule of thumb, the router bit speed has to do with what we call rim speed. It only takes a little woodworking experience to find many ways to do things incorrectly. You can also download RhinoCAM from MecSoft. 2091 23 So a good experiment, push the envelope. 0000018774 00000 n Also what I meant is that the trim router is not made for longer and/or stationary use. If an extra long router bit is being used, the chip load should be decreased.For most material that you will be cutting on a CNC router you will typically set the RPM between 12000 and 24000, and adjust your feed rate to obtain the required results. When machining softer materials or using a stubby router bit the chip load can be increased. CHAPTER 4. Signs your bit speed is too slow If your router speed is too slow, this can also cause problems. Thanks for helping us do what we love. The router is rated at a max of 1.25 HP which might be insufficient for the load the bit is placing on it - you might be able to achieve the same material removal rate with a smaller bit and larger DoC value that will require less torque from the router. There are countless posts about people burning up the makita and almost all of them did it while using a surfacing bit. 1 Watch Easel Live 45 minutes We'll cover the components of feeds and speedsfeed rate, spindle speed, chip load, and depth per passso you can learn how to determine your own settings for a variety of bits. The premium carbide construction makes these profiles sturdy, highly durable and long-lasting. Customers rated this product 3.8 stars because it broke upon use. Your typical router has a motor (possibly a variable speed motor), height adjustment (either fixed, or plunge), and a collet, which is a tapered spring that when compressed creates the friction necessary to hold your cutting tool in place. They tested carbide tipped router bits through various techniques and surfaces. Doc .20 23%stepover. - Pause the machine and check the router bit and settings, - Cut too deep in a single pass. This would include large vbits and bowl bits. Keep in touch. Please read and accept our website Terms and Privacy Policy to post a comment. Rockler bits are made with high-quality ISO K10 and K20 carbide and are sharpened with 600-800 diamond abrasives. Ryan recently served as Assembly Team Faculty Advisor for Team Capitol dc's entry into the 2013 Solar Decathlon. Power Tools. Whiteside Router Bits Ranked #1 By Fine WoodWorking The following link can be used to access Whiteside's Library of Vectric .tool Files for our most popular CNC bits. I was doing my pocket clearance with a 1/4 em - but I found it was taking a long time. In addition to following our router bit speed chart, you want to check the condition of the bits themselves. (mm per tooth)Z= RPM, the speed at which the cutter revolves in the spindle. My comments about the motor not being strong enough is from 2 years of observation and experience burning up the router using a surfacing bit. Powered by Discourse, best viewed with JavaScript enabled, 1024px-Metric_and_imperial_systems_(2019).svg, https://global.discourse-cdn.com/business7/uploads/onefinitycnc/original/3X/c/c/ccb20d837dd833b2a9949e295dcbab71a7107b09.mp4, Largest clearance bit the Makita router can use, is sold outside U.S. with 6 and 8 mm collet. Dont get too carried away with the numbers, use your common sense and trust your gut. If you fail to adjust your router speed when moving from smaller to larger bits, you create a situation where you can end up cutting at 3X the speed (or more) of your smaller bits. Plungerate ? You can put pencil squiggles on the spoil board to see if you have any shallow spots. crafts, science & engineering, design, and technology. There are many resources available to help determine suitable settings for particular material / router bit combinations.These often provide a good starting point but can usually be further improved through a small amount of trial and error. Because the amount left is so thin it offers little resistance to the bit and lowers the chance of your part moving. 14 people found . Tool Manufacturers and Tool Brands by Logo. 2. resipsaphotographer 5 yr. ago. Typical chip thickness values for various size cutters. 0000012366 00000 n Ryan's work is rooted in traditional techniques with interests in CAD/CAM. Feeds and Speeds Calculators for You. Some of these are essential for the basic functionalities of our websites. by Daniel S Mon Oct 08, 2018 7:02 pm, Post Whiteside router bits are comparatively less expensive. 5) Follow all safety recommendations of the power tool manufacturer. Router Bits. The other method is climb milling or cutting reverse. Three wing drills and patented carbide-tipped hole saws are among our line. Had it set at 16,00 rmp with a feed rate of 140 ipm and a plunge rate of 70. Operate the tool only when hand-held. If you are running at 18000 RPM using a 25mm cutter with two flutes, and a recommended chip load of 0.1 mm/tooth: If the RPM were increased to 24000 RPM the new feed rate would work out to be: When calculating the feed rate for any material the chip load is therefore one of the most important factors to be taken into account because the chip load determines the amount of material that each tooth will remove, plus the load that each tooth will have to take. He has an extensive knowledge in Rhino3d and related software. Woodworkers usually look for two things in a router bit: its ability to cut cleanly and to stay sharp in the long run. It struggles to push the 1/4 bits a full speed so anything bigger than that is going to be a strain on the router.
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