On Thu, 13 Oct 2016 10:15:02 -0400, Ed Huntress wrote:

On Wed, 12 Oct 2016 19:08:42 -0700 (PDT), SteamboatEd Haas
wrote:

On Wednesday, October 12, 2016 at 5:26:14 PM UTC-7,
wrote:
On Wednesday, October 12, 2016 at 3:34:04 PM UTC-4, SteamboatEd Haas
wrote:
Hey gang I'm making some parts out of delrin; they've got fins on
'em and when they're cut to length the fuzz is everywhere! I'm
thinking of using my brass tumbler with walnut shells unless
someone's got a better idea. Here's a link to the problem:
https://www.flickr.com/photos/steamb...0108521891/in/
album-72157673545442262/

Looking at the picture. it looks like the fuzz in one one side. So I
am guessing the parts were cut off on a table saw.

So maybe you could rotate the part as it is being cut off so less fuzz
in created. So the saw blade in always cutting into the part. Bad
description, but I can not think of a better way to describe it.

You might also try a different saw blade or maybe a brand new one.

Dan

Actually I cut 'em with a wet abrasive cutoff saw, as it had the
thinnest blade and so wastes the least material. I'm going to try again
with a cold saw tomorrow. I've also now got access to a 100w laser
cutter and we're going to take a whack at cutting the parts out of plate
instead of whittling round bar. Laser means no fuzz at all and that may
wind up being the winner.

Watch out cutting plastics with a laser. The toxic smoke is a serious
problem with many plastics (I don't know which ones, but you could find
out).

I wrote an article about a shop in CA that does that, on weekends only,
with only the owner in the shop, and he opens all the windows and wears
a SCUBA rig when he does so. g

Waterjet is the preferred method these days.

No burrs with water?

--

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com

I'm looking for work -- see my website!