hot stamping delrin

[cambria]

Perhaps a classic situation: I have 500 delrin housings with a small set of molded-in initials of an ex-client. This was done as a courtesy, and of course the rest is history, as is the client. Our parts and tooling by the way.

So being cheap enough not to scrap some good housings, I am looking for a way eliminate the 3 letters. I tried a quick machine job, but the slightly convex shape makes that look a bit cheesy. I am thinking of perhaps a hot stamp - basically branding the housing with a blank stamp or an appropriate set of letters. Delrin, a great material, is quite anti-social when it comes to sharing electrons in its shells, so fillers/epoxies will not work. Any suggestions?

dj

 

[MikeHalloran]

A concave piece of copper in a big-ass soldering iron.

Melt 'em down.



Mike Halloran
Pembroke Pines, FL, USA

 

[cambria]

Yes, I see your point. It would be nice to be able to sell the finished product though. Your idea does hit on something - perhaps I was trying to be too careful, and that we should go ahead and drill the thing out, then plug it with something, perhaps a new logo made out of a second piece of material.

 

[btrueblood]

Take 'em to a shop with a CO2 laser engraver, and "etch" a new logo over the old.

 

[MacGyverS2000]

DJ,

Where are you located? bt's suggestion of lasering over the current initials is a good one, and I can work with you to do just that if you have an interest.

Dan - Owner

http://www.Hi-TecDesigns.com

 

[mcgyvr]

Are you spending more time/money on a solution to remove the lettering to avoid scrapping that you would just to fill/remove the lettering from the single mold and run another batch? Probably.

 

[cambria]

We are in Seattle. The letters are about .125 inch high,but stretched sideways a bit, with a 3/4 in. wide total for the 3 letters. Let me think about that one - as I look at it, its not clear to me how overwriting with a laser will look any good, unless you can actually erase the leeters. Remember, they are molded in, not embossed. Thanks.

 

[cambria]

mcgyvr - of course I am.Thats not the point. Being stubborn, now thats the point.

dj

 

[patprimmer]

Thermal treatments of acetal tend to produce a lot of formaldehyde gas with the severe consequences on the local environment and workers health. Just regrind the parts. Acetal regrind runs quite nicely unless it has been miss handled.

Regards
Pat
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