Thanks, Mike! I’ll try mineral spirits out. Naptha works ok but it’s getting harder to get around here.
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| Latex vs nitrile gloves http://mowrystrings.luthiersforum.com/forum/viewtopic.php?f=10101&t=56537 |
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| Author: | bcombs510 [ Mon Apr 22, 2024 1:14 pm ] |
| Post subject: | Latex vs nitrile gloves |
Hey folks, Firstly, I found this helpful - https://amo-csd.lbl.gov/downloads/Chemi ... Gloves.pdf Second, a question - I wanted to use a mix of isopropyl and water (50/50) as a degreaser when sanding finish topcoat. The autobody folks recommend wiping between each grit just to clean the surface and prepare it for the next grit. When using this recently I noticed that the orange nitrile gloves I use were leaving an imprint on the finish after wiping that had to be sanded away. I’m wondering what that is, but more importantly, does anyone have experience with a glove that absolutely does not react with isopropyl? I have a suspicion it could also maybe come from the “touchscreen friendly” aspect of the gloves I’m using? I don’t know what makes them “touchscreen friendly”, anyone know? Brad Sent from my iPhone using Tapatalk Pro |
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| Author: | rbuddy [ Mon Apr 22, 2024 1:31 pm ] |
| Post subject: | Re: Latex vs nitrile gloves |
What kind of finish? I think touchscreens function on sensing a finger electrically and not pressure so maybe the "rubber" is conductive somehow. Latex can be an allergen so some people get sensitized to it. Sounds like something may be softening the finish. |
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| Author: | SteveSmith [ Mon Apr 22, 2024 1:42 pm ] |
| Post subject: | Re: Latex vs nitrile gloves |
I use the blue nitrile gloves for finishing and clean in between grits and prior to subsequent finish coats using naphtha on a paper towel. I have not noticed the issue you're having. I don't use alcohol because I usually have shellac on my guitars pretty early in the process and I would worry the alcohol would soften it or make it sticky. |
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| Author: | bcombs510 [ Mon Apr 22, 2024 2:12 pm ] |
| Post subject: | Re: Latex vs nitrile gloves |
Finish is UV cured polyester. I don’t think it should be the isopropyl softening the finish? I’ll experiment a little more and/or switch to Naptha. Sent from my iPhone using Tapatalk Pro |
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| Author: | rbuddy [ Mon Apr 22, 2024 2:43 pm ] |
| Post subject: | Re: Latex vs nitrile gloves |
Take a look at this Brad - https://www.engineeringtoolbox.com/chemical-resistance-polyester-d_784.html I did not look in depth but it looks like polyester is listed as resistant in temps up to 60F (temp) for dilutions but not resistant to 100% isopropyl. So may be some reactivity there. Further down the list it looks like poly is resistant to Naphtha and petroleum products. Just a quick look on my part so probly needs more research. Particular formulas of poly may have different characteristics too. |
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| Author: | bcombs510 [ Mon Apr 22, 2024 3:11 pm ] |
| Post subject: | Re: Latex vs nitrile gloves |
Fascinating. I thought once fully cured the polyester would be resistant to isopropyl! Sent from my iPhone using Tapatalk Pro |
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| Author: | bluescreek [ Mon Apr 22, 2024 4:10 pm ] |
| Post subject: | Re: Latex vs nitrile gloves |
nitrile is going to be desolved in acetone I use vinyl |
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| Author: | Mike_P [ Mon Apr 22, 2024 7:16 pm ] |
| Post subject: | Re: Latex vs nitrile gloves |
when dealing with lacquer I've always used mineral spirits as a wash after sanding before the next coat, making sure of course to let it all flash off...never had any issues whatsoever with doing this as I've always viewed mineral spirits to be a safe product for a cured finish. never tried it with poly though but I'd suspect it would be fine as I've been using mineral spirits forever for cleaning off subfloor adhesive when it gets on any sort of finished product and haven't had an issue (that I know of) ever. and being the potential idiot I am I've never used any sort of gloves when using spirits. YMMV of course |
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| Author: | bcombs510 [ Mon Apr 22, 2024 9:06 pm ] |
| Post subject: | Re: Latex vs nitrile gloves |
Thanks, Mike! I’ll try mineral spirits out. Naptha works ok but it’s getting harder to get around here. Sent from my iPhone using Tapatalk Pro |
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| Author: | Clay S. [ Tue Apr 23, 2024 12:07 pm ] |
| Post subject: | Re: Latex vs nitrile gloves |
I like to wet sand finishes, so a microfiber cloth and 100% dihydrogen oxide has always worked for me for removing sanding dust between grits. I've used Naphtha in the past but it stinks and gives me a headache. |
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