Machining Maskant

[parkson]

Hi,

I have a job where I need to machine pre finished (mirror) parts. The chips from milling can scratch the face. I need to mask the parts w/ some liquid masking that won't tear against the forces of the endmills and not be eaten up by the coolant.

I have looked into the following.
1. Dymax UV resin (to expensive)
2. Tolber (xp-2000 and mircoshield) both tear during machining.

Also the masking must be removed via peeling or light heat (150deg max)
We cannot use solvent to remove.

Any ideas?

-Park

[ctate2000]

Could you use parafin? I have never done this but it sounds like a good idea?????????????

[Delw]

The stuff they use on regrind endmills to protect them. Its like a wax , I dont remember the name.
we used it on big aluminum parts that were polished and also on parts that had to be machined that are very thin to eliminate chatter,

[ImanCarrot]

I make a lot of lenses and mirror and use Spraylat

http://www.spraylat.co.uk/industry_detail.php?id=2

You brush it on or paint it on. When you're done stick a bit of tape to it and just peel it off.

I've also used Opticlean, it's more expensive but cleans the surface good when it's peeled off.