• TalkBass has been independent since 1998. Add your voice.
    Create a free account to reply to discussions, view embedded media, and browse with fewer display ads.
    Join freeLog in
    Want zero display ads or expanded classifieds tools? Compare plans.

Where to get shielding paint cheap?

I've been using the SuperShield exclusively for about 7 years. Never any types of problems with it. It costs about $40 per can, and a can is good for 10-20 instruments. I figure the average material cost is $3 per bass. The main thing is the big labor savings. For my production model basses, I've made up masonite masking plates which pin onto the bodies. No masking tape involved. The whole shielding process takes several minutes total.

I can't imagine ever going back to copper tape. Way too much labor and too many problems.


This stuff?

http://www.amazon.com/MG-Chemicals-...-3-spell&keywords=SuperShield+shielding+paint
 
As an Amazon Associate, TalkBass may receive commissions from qualifying purchases made via links on this site.
Zombie thread!! Anybody with new thoughts on this. I have been buying this and it does add up. Not sure if it does as good a job preventing noise as the tape does either.

MG Chemicals 841 Super Shield Nickel Conductive Coating, 340g (12 Oz) Aerosol Can: Conductive Paint: Amazon.com: Industrial & Scientific

It works just as well as the tape (either copper or aluminum.) The material used will not determine the quality of the job, they all work just as well at silencing a bass. The choice of material has to do with preference of application. I prefer paint as it is much faster, looks more professional, and will not lose it adhesion over time. I do still use copper for certain parts.

I get a handful of basses out of a single can. The time saved on paint versus copper easily negates any added costs in my books. My time is far more valuable than my money. I buy my paint locally and my copper tape straight from China off Ebay, it's dirt cheap.

MG Chemicals product is considerably better than Stew-Mac's stuff. Stew-Mac's stuff is over-priced and prone to flaking. I do not recommend it, even to my enemies.
 
As an Amazon Associate, TalkBass may receive commissions from qualifying purchases made via links on this site.
As an Amazon Associate, TalkBass may receive commissions from qualifying purchases made via links on this site.
  • Like
Reactions: PDX Rich
I've been curious as to how something like [Invalid or Expired Link Removed]


Well this is less than $20 for 30oz so maybe test this stuff too:
Rust Oleum 247596 Magnetic Interior Primer-MAGNETIC PRIMER

Home Depot carries a Martha Stewart product that is less than $8 for 4 oz and may also do the job:
Martha Stewart Crafts 4-oz. Magnetic Paint-32196 - The Home Depot

Neither of the above paints are magnetic per se, rather they provide a surface for magnets to stick.

There is also a way to make your own conductive using paint acrylic paint and graphite mixed 1:1. Here is the web site:
Conductive Paint - 10
 
Last edited:
Well this is less than $20 for 30oz so maybe test this stuff too:
Rust Oleum 247596 Magnetic Interior Primer-MAGNETIC PRIMER

Home Depot carries a Martha Stewart product that is less than $8 for 4 oz and may also do the job:
Martha Stewart Crafts 4-oz. Magnetic Paint-32196 - The Home Depot

Neither of the above paints are magnetic per se, rather they provide a surface for magnets to stick.

There is also a way to make your own conductive using paint acrylic paint and graphite mixed 1:1. Here is the web site:
Conductive Paint - 10

Those two magnetic paints may be worth a shot. I don't know if the graphite powder mixed with acrylic would work so well, the acrylic may act as an insulator between the graphite particles it is suspending. It is possible that is the situation with the magnetic stuff as well.

The weld through primer has to be conductive or it would give a weak, contaminated weld.
 
Well this is less than $20 for 30oz so maybe test this stuff too:
Rust Oleum 247596 Magnetic Interior Primer-MAGNETIC PRIMER

Home Depot carries a Martha Stewart product that is less than $8 for 4 oz and may also do the job:
Martha Stewart Crafts 4-oz. Magnetic Paint-32196 - The Home Depot

Neither of the above paints are magnetic per se, rather they provide a surface for magnets to stick.

There is also a way to make your own conductive using paint acrylic paint and graphite mixed 1:1. Here is the web site:
Conductive Paint - 10

I would be really interested to know if that DIY conductive paint works... would be awesome
 
Hmmm...That's an interesting alternative. From the description, it should work fine as shielding. Still not cheap, but less than the MG Nickel. It may be locally available at metal/weld supply shops.

Local availability is exactly what I was thinking. I know I can get zing based weld through cold gal at a local welding shop, they may very well carry the copper based stuff as well.
 

Yes, that's the same stuff I linked. I ordered a can of the same stuff, in a different brand this morning from O'Reilly auto parts, it should be here early this afternoon. I plan on doing some testing, I will definitely post the results and let you guys know how it goes.

Invalid Link Removed. I could have ordered it slightly cheaper, but I don't mind paying a bit more for local
 
As an Amazon Associate, TalkBass may receive commissions from qualifying purchases made via links on this site.
Yes it will be cool to see how it does for you.

I just applied the second coat, I am seeing about 4 megaohms across a 10" span, but its still not dry so that number should drop dramatically when its fully dry. I think this stuff is going to work well. I need to paint the other side of the board with the Stewmac stuff and see how it compares.
 
  • Like
Reactions: tjclem
How did it work out, Hopkins? Did the resistance come down to something reasonable when it dried? Megaohms is too much. A few hundred ohms would be okay. The Super Shield Nickel measures only one or two ohms.

I've been thinking about buying some copper powder and trying to mix it into the clear Varathane that I use for all my regular painting. Dedicate one old cheapo spray gun just for the shielding spray.

The copper powder is available on Amazon and isn't too expensive:
http://www.amazon.com/Copper-Powder...&qid=1447541200&sr=8-6&keywords=copper+powder

If my mental calculations are correct, 1 lb of copper would make a pretty good supply of shielding paint?
 
As an Amazon Associate, TalkBass may receive commissions from qualifying purchases made via links on this site.