Thanks for all those who gave me advice on my problem breaking 1/4" bits
when routing out some countertops from 3/4" plywood on my CNC table. It
turns out that the 1/4" bits were just getting too hot and I was pushing
them too hard.
I went to a 1/2" shank, straight router bit 3/8" diameter and 1" long. I
slowed the RPM down to 12,000 and kept the feed rate at about 36 inches per
minute, and for good measure took several .2" deep passes.
The 3/8" bit barely got warm to the touch after some long runs and made nice
smooth cuts through the plywood and pulled good looking chips.
This configuration won't win any speed records, but since I'm doing only a
small amount of custom not production work it's fine for this job. Maybe if
I get some scrap plywood I'll run some tests and see how fast I can push it.
Too fast though and you start pushing the material around, stalling the
router motor, breaking bits and collets and other bad things.
Tom Kreyche
Can others request the same information via private email?
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Hello there,
> Can others request the same information via private email?
Actually, I will post it in this thread in a few days. I didn't think anyone
else would be interested. I only asked him to reply privately so I could
forward the message to my office to remind me. But, feel free to email me
privately, I will scan some docs any email them to anyone who is interested.
Thanks,
David.
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Dear Tom,
I was at an Industrial Machinery show (I am in the tool biz) a few weeks
back and I was looking at Diamond router bits, in a "compression" flute made
specifically for CNC routing. Spiral carbide bits are fragile and prone to
breaking, but these diamond bits had a body made of steel and I don't think
they would fracture or suffer heat stress like carbide would. These bits
also would (the manufacturer claimed) last 50 times longer than carbide. I
have all the info at work, send me a private email if you would like more
info on the company and the bits.
Thanks,
David.
Every neighbourhood has one, in mine, I'm him.
Remove the "splinter" from my email address to email me.
Newbies, please read this newsgroups FAQ.
rec.ww FAQ http://www.robson.org/woodfaq/
Archives http://groups.google.com/advanced_group_search
Crowbar FAQ http://www.klownhammer.org/crowbar