A Thanks everyone I get it now Ill get a compression bit Q Has anyone tried

A thanks everyone i get it now ill get a compression

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A Thanks everyone, I get it now. I'll get a compression bit. Q Has anyone tried cutting brass in thicknesses up to 1/4" with their ShopBot? A I cut brass all the time. I regularly cut .090" but I have done up to 3/8". Just get bits designed for non ferrous machining. I run an 1/8" 2 flute bit about .3 -.5 in/sec @ 12k rpm, .02" passes. I find a tapping lubricant to help the cut immensely, and be sure to ramp into every (and I mean every) cut. Q Is anybody cutting Kydex and can share what bit you are using, cut speed and RPMs that you are running? A I use a single, double or triple flute Onsrud or Behlin spiral-O. Speed will depend on design and bit diameter. RPM in the 13,000-15,000 range Q I would like to try my hand as some simple 3d carvings . What's the best general purpose bit to get my feet wet with? A Edited select posts about router bits from the ShopBot forum
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Q Any advice when cutting corian ? A Onsrud has a series of 1/4" single flute O-flute straight bits that are ideal for cutting Corian. You want to use a 10% ramp into your part, cut it in two passes plus a skin for the final pass, rotate your spindle around 8K, cut at 1.5 or so IPS and step down at .25ips. This is a good place to start Q Where can I find out more info about cutting plastics ? A Q Can I use a 5mm line boring bit in the ShopBot A This works well. Assuming that you have a spindle brand that does not recommend against numerous plunge actions. The HSD that is most sold with the ShopBot works well for this purpose. Install a 10mm collet, and making sure that the flat on the shank is lined up well with the collet segments, set your RPM to around 5K RPM. Depending on your material density, try a plunge speeds starting around 1 IPS and increase till you get nice chips and a clean hole. Due to the hard surface of Melamine, it requires a slower plunge than Plywood or MDF. I have not found peck drilling to be needed, and I have drilled thousands of holes thru 3/4 material using 3mm, 5mm and 10mm boring bits Q I am trying to make a piece out of MDF that has allot of small details. I keep having trouble breaking off some of that detail. Any suggestions for things that I can do to help prevent this? A If you are buying your MDF at the big box stores you’re not getting good enough quality material to do the job. Q Can I get opinions on feed speed for cutting MDF ? A the chipload calculator on the SB3 tools menu shows that you need fast feed speed to keep from burning up your cutters. I cut MDF at 12,000 RPM at a feed rate of 8-ips with a 2-flute downcut spiral 3/8-inch cutter. That gives me a chipload of 0.020, which is about what I want with MDF. Using a 1-flute cutter, I normally run at 5-ips at 15,000 RPM to get the same chipload. My vacuum system keeps me from cutting all of the way through the MDF, but I normally cut -0.730" on 0.750" material. Edited select posts about router bits from the ShopBot forum. Continued…
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Q. What's the best way to cut Styrofoam… Edited select posts about router bits from the ShopBot forum. Continued… A . So the conclusion is 18k and 2ips up cut or down cut and a normal cut, not a climb cut.
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  • Fall '19
  • Tools
  • Drill bit, Cutting, Router Bit Basics

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