Blistering??

[KZjim Amateur Metal Finisher Find all posts View Profile Close KZjim]

I am currently coating the hardware from a guys drum kit..... his haedware is chrome and its now satin black....
I preheated the parts and coated... no prob.. but the chrome on the a few of the parts blistered.... has anyone had this problem with chrome stuff... ?
I have done valve covers and air cleaners with no problems.

[nuttyman Metal Finishing Guru Find all posts View Profile Close nuttyman]

Re: Blistering??

no, but the hardware you speak of is probably 20 guage or thinner correct? if so then it is probably warping under the heat &/or the integrity of the chrome's adhesion has been compromised.

nutty

[KZjim Amateur Metal Finisher Find all posts View Profile Close KZjim]

Re: Blistering??

the parts are all cast, except for the rings that hold the drum head down... cheap chrome job?

[nuttyman Metal Finishing Guru Find all posts View Profile Close nuttyman]

Re: Blistering??

perhaps, or it has been beat long enough that it is starting to peel?

[fxstcguy98 Amateur Metal Finisher Find all posts View Profile Close fxstcguy98]

Re: Blistering??

The drum hardware is most likely potmetal and therefore it will outgas when heated and bubble even the worlds greatest chrome job.

[tavo1765 Amateur Metal Finisher Find all posts View Profile Close tavo1765]

Re: Blistering??

Yep, its outgassing. You need to get outgass forgiving powder to help you and pre heat the **** out of it to a temp of at least 450f for 40mins to help reduce the problem.

[fxstcguy98 Amateur Metal Finisher Find all posts View Profile Close fxstcguy98]

Re: Blistering??

No, you will have to remove the chrome first, it's most likely blistered under the chrome, then use the special powders

[gtabadboy New User Find all posts View Profile Close gtabadboy]

Re: Blistering??

What special powders are these?

[CaptainChauncy Amateur Metal Finisher Find all posts View Profile Close CaptainChauncy]

Re: Blistering??

What special powders are these?

Most likely outgass forgiving powders..

[KZjim Amateur Metal Finisher Find all posts View Profile Close KZjim]

Re: Blistering??

What about a lower temperature and a longer cure time?