Chamfering Machine

**mklotz** · Mar 4, 2018, 07:50 PM

I agree wholeheartedly about hearing protection. I have tinnitus from too much unprotected youthful shooting and rivet hammering.
It's really annoying - especially at the symphony.

What I don't understand is why we don't have earlids. Internal flappers in the ear canal that work similar to eyelids with the exception that the default state when sleeping would be open rather than closed; must listen for those wolves outside the cave.
Beyond the aspect of hearing protection, just imagine the benefits of being able to unobtrusively shut down your hearing when the kids arrive with all the undisciplined grandkids in tow.

Actually, I think there's a real market for soft plastic fake hearing aids that could be worn in such a situation.

**Frank S** · Mar 4, 2018, 09:16 PM

I have several 7 and 9: rt angle grinders laying around with bad gears. Years ago I made a straight grinder out of a 5 " angle grinder which made a perfect pencil grinder with a 5/8'11 arbor it was great with the 2 and 3" diameter cob stones as long as they had a 30000 RPM rating Seeing this chamfering rig it has started me to thinking about making another straight grinder out of one of the heavier duty 6000 RPM machines without the 3 to 1 reduction gears it would have 18000 RPM More than high enough for cutter speed and heavy duty enough to stand up to my punishment.
For hearing protection since I already have a 60 &30% loss I wear a pair of tactical shooters ear muffs now when using the chain saw or cutting sheet metal with a circular saw and other things that make loud or high impact sounds safety glasses are fine but I can't see through even new high dollar ones for critical measurements. using a chain saw is fine don't need to see much cutting trees any way I mostly wear a clear face shield when grinding though and I couldn't hit a nail to save my life wearing any kind of glasses, prescription or plain or a face shield

**Frank S** · Mar 4, 2018, 09:18 PM

Soft plastic faux hearing aids? Humm you may have something there need help in creating a start up company?

**ncollar** · Mar 5, 2018, 08:58 PM

There is a great big market for hearing aids and sport related injures. If it's not using our head it's doing totally stupid things. And I have done some very stupid things in my life.
Nelson

**Frank S** · Mar 5, 2018, 09:41 PM

Nelson what Marv and I were referring to is creating a phony plastic hearing aid which would actually be sound suppressing ear plugs, we can pretend is not working so we won't have to pay attention to or even hear the grand kids.

**Tuomas** · Mar 6, 2018, 02:13 AM

I tried to read carefully. But didn't find info about blade you used?
Tungsten carbide cutter?

**ncollar** · Mar 6, 2018, 08:44 PM

I got it now, the only problem is I do not hear them most of the time.
Nelson

**old_toolmaker** · Mar 7, 2018, 08:58 AM

petertha,

That is a very nice concept and I sure it serves you well. Have you thought of adding a dust/chip pick up adapter for a shop vac?
I have a small Elu router and router table set up in a for my chamfering needs. I have added a dust pickup for mine and it makes all those sharp ugly chips vanish. I use a piloted 45 degree carbide bit and it can sling a lot of chips. As for noise I second what has been said here. I now sport a pair of new hearing aids as a result of not using hearing protection for most of my 50 plus years of machining around loud equipment.

**wizard69** · Mar 13, 2018, 05:25 PM

Originally Posted by ncollar

... And I have done some very stupid things in my life.
Nelson

Haven't we all! I damaged hearing in my left ear with a single gun shot without hearing protection. Lets not get into snowmobile and biking accidents, as you say doing stupid things.

This chamfering tool has me interested and has already given me ideas. My only concerns are finding a cheap grinder to repurpose and the amount of hangout required to clear the collet nose. I looks like a great place to use a set screw holder or even a shrink fit solution. Of course a set screw holder implies building your own spindle.

All this has me wondering if adding a flinger to the vertically mounted arrangement would do enough to keep the swarf away from the open windings. These tool posts have me thinking and distracted from completing my shop area in the basement.