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View Full Version : Stainless cutting trim bits?



bleeth
03-13-2014, 06:50 PM
I've got a bunch of 18 Ga 304 Stainless work that I will have to flush trim after it's installed on the substrate. I've done this with standard flush trim wood bits before but only in small amounts as it, of course, kills the typical carbide tipped flush bit pretty quickly, even with cutting fluid.
Someone told me today he knew of a toolmaker that was making what was basically an end mill with a bearing with different edge geometry than the usual straight or slightly helixed bit that does a great job of it and lasts a while but couldn't remember their name.
Internet search hasn't helped so far.
I checked with a few of my tool supplier friends but no-one knew who it could be and they even checked around a bit for me.
Anyone here know of a company that makes that type of bit? First batch of parts due for machining Monday and I have no problem getting what I need Fedexed in but would need to order tomorrow.

gc3
03-13-2014, 07:10 PM
http://multicamtest.ourpaperlife.com/the-new-onsrud-83-300-series-tooling-for-stainless-steel/


it's not a flush trim bit....but maybe you can cut it on the machine

scottp55
03-13-2014, 08:08 PM
Just spent an hour searching because I was curious, hope it wasn't this one--the reviews STUNK.http://www.toolstoday.com/p-6115-invectra-metal-laminate-trim-bits.aspx

gc3
03-13-2014, 08:38 PM
amana website specifically states that bit is not for stainless...

scottp55
03-13-2014, 08:41 PM
Sorry Dave and Gene. Good luck Dave

garyb
03-13-2014, 11:52 PM
Don't know of a stainless endmill with bearing but for a standard stainless endmill, 83-300 series
1/4" will be 83-315AITIN, 25ipm 9000k and .030 depth of cut
Gary

dlcw
03-14-2014, 01:15 PM
Dave,

This, according to the Osnrud guy who runs the site, is a stainless steel cutting bit:

http://www.ebay.com/itm/DHC66672-LMT-Onsrud-3-16-Solid-Carbide-Four-Flute-UpCut-Endmill-/380861071987?pt=LH_DefaultDomain_0&hash=item58ad16c273

bleeth
03-15-2014, 06:31 AM
Lots of good stainless cutting end mills out there but none with a bearing. I recall a friend of mine in Seattle used to get Titanium ones from the Boeing surplus store and then turn the end down on his small mill to take a bearing. He claimed it was the smoothest cutting bits he ever used on teak and allowed him to make rod-holders with a pattern and a router (way before small shop cnc days) without having any of the hook ends break.
Looks like we're just going to chew through some standard flush cutters!