Thread: 2pac Problem!

Of course you can sand two pack. Trust me, my finger tips can recall many many hours of doing just that.....

what you don't want to be doing is coating over 2pac in a single pack product. Not advisable. It can work, but not advisable. Best solution is too sand the 2pac off back to bare then re-coat.

CHeers

Bella2,

Some time ago I was told some professionals apply shellac before adulterating the piece with 2 pac. They do this to make stripping the 2 pac easier if ever it has to be done in the future.

The theory is you can get some metho under the 2 pac into the shellac and it will come off in sheets. It might be worth investigating or perhaps they were pulling my leg but they sounded fair dinkum at the time.

Shane might be able to shed more light on the topic or let me know if I was duped.

Thanks guys, shall have a go!!

"Some time ago I was told some professionals apply shellac before adulterating the piece with 2 pac. They do this to make stripping the 2 pac easier if ever it has to be done in the future."

That seems a bit silly, if you were to repair 2pac with a new coat of 2pac its only a matter of removal of waxes and the shine thats all. I dont think metho would penatrate 2pac at all, not much does.
Its more like as a sealer, to stop the 2pac from soaking right in and using up too much expensive paint IMHO?

Originally Posted by Wood Borer

Bella2,

Some time ago I was told some professionals apply shellac before adulterating the piece with 2 pac. They do this to make stripping the 2 pac easier if ever it has to be done in the future.

The theory is you can get some metho under the 2 pac into the shellac and it will come off in sheets. It might be worth investigating or perhaps they were pulling my leg but they sounded fair dinkum at the time.

Shane might be able to shed more light on the topic or let me know if I was duped.

I wouldn't say you were 'duped' but any modern workshop that use's 2-pac probably wouldn't even know what shellac was let alone spend the time and resources to apply a coat of that first...Not to say someone out there isn't doing it..

And if you ask the tech blokes that now 2-pac about the idea of apply a two part product over top of a single part product, they will cringe!

Besides the fact that most 2-pac's are resistant to about 90% of household chemicals,that would include metho.......soooooo. to get the metho under the 2-pac, if thats the theory, you would have to 'score' the 2 pac to allow the metho to get under the surface, but IMHO that still wouldn't work and you would damage the substrate in anycase from the 'scoring'.....Frankly sanding it off would be quicker and cleaner (remember the dust mask!! :eek: )

When sanding two pack BE CAREFULL!

As professional spray painters are aware it contains ISOCYANITES that can and will cause cancer.

If you are to sand it wear a mask and GLOVES because the residue can be absorbed via the skin.

It is false to believe that it is absent when hardened.

The iso is toxic when inhaled and if fingers are exposed while sanding dry or wet it will be absorbed without gloves. If you are exposed its TOO LATE.
Meltdown has started. Chronic isocyanite is wonderful stuff BEWARE :eek:

This goes for wood finish and AUTO finish. The resins form the basis for most paints.

Im sure its been made known by pros in the FORUM! :confused:

Originally Posted by Wood Borer

Bella2,

Some time ago I was told some professionals apply shellac before adulterating the piece with 2 pac. They do this to make stripping the 2 pac easier if ever it has to be done in the future.

The theory is you can get some metho under the 2 pac into the shellac and it will come off in sheets. It might be worth investigating or perhaps they were pulling my leg but they sounded fair dinkum at the time.

Shane might be able to shed more light on the topic or let me know if I was duped.

I've removed oil paint that was applied over shellac and was given the same advice as you. I'll save you the trouble - metho does dissolve shellac but at glacial pace, so it does not penetrate enough to lift the paint off. As per the other responses, whatever you do make sure you take adequate safety measures to protect yourself when removing the 2pac finish. With that in mind, sanding, scraping and heating the paint all work to varying degrees. If you are rubbing down intricate details and sand through the paint on the high points, it can be worth soaking some paper towel in metho and sitting it on top and covering it with plastic to get some penetration under the paint - a little at a time.

If there are lots of intricate parts on your project I'd investigate getting it dipped or similar - its really easy to lose the nice fine details by using abrasives to remove the paint.