The Shop > Tools
Laser Marking Steel
awemawson:
Jonny, yes I saw that a year or two back. There was another version where the stencil was made on a standard type writer using a porous paper with a wax film that got knocked off where you wanted a mark. It's the same process making his stencil as making screen printing stencils.
As I have the laser I can print any graphic or text that I can generate using Windows, for no cost other than a puff of Dry Moly, and the longest part of the process is waiting for the 'Dry Moly' to dry ! No faffing about making stencils, and having 'developer' (which is caustic soda), and special electrolyte, and of course the special stencil film.
tom osselton:
I just received some photopolymer paper to give etching a try there are a quite few done using salt water and a q-tip with a dc charger for knifemaking logos, apperantly a shot of ac will blacken it ( after the initial etch).
I have one of the actograph pen types made by Martindale it is a older unit with 10 heat settings I picked up for $85.00 Canadian, on there site the new one was $700.00!
PK:
So we use that 'unbelievably expensive' spray. The flavor we buy is called Cermark, and it costs about AU$170 a can! It does a really good job (will post some pics tomorrow), but holy cow it hurts to buy that can.... I once went looking for some dry molly spray but couldn't find any. I'll have another look for that brand, (any chance of a pointer to a web site?)
It'd be really interesting to compare..
Also interesting is... when you upgrade the tube and power supply in your 40W Chinese laser to >100W, marking metals becomes possible. It's still not as good as the Cermark stuff, and sometimes we just hit the job with some black acrylic paint it get it to start absorbing, but it does work...
Cheers
PK
awemawson:
I got it from my local convenience store eBay :lol:
PK:
:clap:
Found some at Farnell. Will post comparison pics when it gets here....
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