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Funnels for lacquer.
http://mowrystrings.luthiersforum.com/forum/viewtopic.php?f=10101&t=54956
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Author:  Pegasusguitars [ Sun May 01, 2022 10:55 pm ]
Post subject:  Funnels for lacquer.

I'm looking for a couple of new funnels for straining lacquer and filling my gravity gun cup. Lots of different kinds of plastic out there. I've used many plastic funnels over the years, but always wondered about possible reactions to the plastic and lacquer. Any recommendations or definitive knowledge about available plastic funnels? I know stainless works, but have not found any quite the size I want.Thanks, Bob

Author:  Barry Daniels [ Mon May 02, 2022 10:04 am ]
Post subject:  Re: Funnels for lacquer.

Nylon would be non-reactive with lacquer. I also think any funnel made for gasoline would work. So funnels from an auto parts store should be fine. There are Chemical Compatibility Charts available that show which plastics work with different chemicals. I will look around and post one for you.

Author:  Barry Daniels [ Mon May 02, 2022 10:07 am ]
Post subject:  Re: Funnels for lacquer.

https://www.terrauniversal.com/blog/chemical-compatibility-chart-plastics/

The chart indicates that teflon would be the only plastic that would not be reactive to all solvents but that would be hard to find and expensive. Keep in mind that the short term exposure of the lacquer to the funnel would minimize any possible effect. In reality, the solvent will do more damage to the plastic than the plastic will to the solvent. Personally, I wouldn't worry about it.

Author:  SteveSmith [ Mon May 02, 2022 10:52 am ]
Post subject:  Re: Funnels for lacquer.

I’ve had lacquer thinner in polyethylene squeeze bottles for a year or so with no problems. A quick look for lab funnels on Amazon shows lots of options.

Author:  Jim Watts [ Mon May 02, 2022 11:14 am ]
Post subject:  Re: Funnels for lacquer.

Bob, did you find these stainless steel funnels? They range from 2 oz to 64 oz.
https://www.mcmaster.com/funnels/metal-funnels-6/

Author:  Pegasusguitars [ Mon May 02, 2022 11:39 am ]
Post subject:  Re: Funnels for lacquer.

Well I've never worried about this issue before, so sounds like I'm over thinking it. Thanks for all the replies. Have a great week!-Bob

Author:  Clay S. [ Mon May 02, 2022 1:15 pm ]
Post subject:  Re: Funnels for lacquer.

Some finishers use disposable paper cones with mesh strainers:
https://www.amazon.com/TCP-Global-Strai ... B000PA09V0

Author:  Pegasusguitars [ Mon May 02, 2022 1:37 pm ]
Post subject:  Re: Funnels for lacquer.

Clay- I use those, but usually inside of a more rigid funnel. Thanks, Bob

Author:  ballbanjos [ Mon May 02, 2022 4:24 pm ]
Post subject:  Re: Funnels for lacquer.

I've had guns with nylon cups as well as with aluminum cups. Seems like if the gun itself is using these materials then either would probably be OK for a funnel.

Dave

Author:  Clay S. [ Mon May 02, 2022 4:37 pm ]
Post subject:  Re: Funnels for lacquer.

Hi Bob,
A friend of mine used the strainer cones without a funnel by perching them on the lip of the quart cup and filling it slow enough to where the material didn't rise much above the filter screen. He was using a siphon feed gun and probably didn't fill the cup to the top. I guess most gravity feed guns don't have as large a cup so that might not work as well with them.

Author:  Tim Mullin [ Mon May 02, 2022 6:55 pm ]
Post subject:  Re: Funnels for lacquer.

I’ve always just used disposable paint filtre cones. They sit pretty well on my gravity gun for the time it takes to fill it up. Then it gets turfed. Adding something else to clean and/or transfer dirt never seemed like a good idea.


Sent from my iPad using Tapatalk

Author:  ballbanjos [ Mon May 02, 2022 7:47 pm ]
Post subject:  Re: Funnels for lacquer.

Tim Mullin wrote:
I’ve always just used disposable paint filtre cones. They sit pretty well on my gravity gun for the time it takes to fill it up. Then it gets turfed. Adding something else to clean and/or transfer dirt never seemed like a good idea.


Sent from my iPad using Tapatalk



Guess that's one of the reasons I moved to the PPS system. With the filter being built into the disposable cup liner, there's nothing extra to clean or transfer dirt. Just pour the finish into the PPS container and go. No additional filtering necessary. Wish I had moved to PPS much earlier.

Dave

Author:  Pegasusguitars [ Mon May 02, 2022 9:47 pm ]
Post subject:  Re: Funnels for lacquer.

Clay and Tim, Those paper filters fit into the loop on the standard size stands made for holding HVLP turbine guns.Sometimes though I just need to use a funnel.

Jim, Those SS funnels are nice. Pricey. thanks.

Author:  bluescreek [ Tue May 03, 2022 5:41 am ]
Post subject:  Re: Funnels for lacquer.

https://www.amazon.com/Jeteven-Strainer ... ljaz10cnVl
this is what I use
I made a holder for it. I get my finish in 5 gal cans and can pour out into gallon and qt jars. All filtered and ready to go

Author:  Pegasusguitars [ Tue May 03, 2022 11:19 am ]
Post subject:  Re: Funnels for lacquer.

Thanks John

Author:  Woodie G [ Fri May 06, 2022 9:20 am ]
Post subject:  Re: Funnels for lacquer.

Nylon or low/med density polyethylene funnels work... Dollar Store (now the $2 Dollar Store...soon to be $5 Store) funnel sets are made of the later and hold up for years in normal use.

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