It depends on what primer you use, alcohol works great cleaning acrylic ones, even if completely dry.
Remember to store the airbrush with the needle retracted, to avoid getting the tip stuck if cleaning was not perfect.
2 Likes
This routine also protects the needle tip from physical damage
3 Likes
Mr surfacer 1500 also comes up easy with IPA or lacquer thinner once cured.
Yes, the Gunze lacquer thinner can re-solve the Surfacer.
I normally prime metal and resin. I just finished an IJA type 97 and did not prime the Fruiel trackā¦ Cant tell you why, just didnāt. Every time I touched the track paint would flake off. Very aggravating. I primarily use Tamiya and Model Master paints. Both hold to the plastic well without priming the plastic.
1 Like
Regarding the respiratorā¦
Test the fit. Blocking the intake should make it impossible to breathe. Otherwise you need a different size or need to tighten the straps.
If you use a solvent based paint make sure to employ filters rated for organic vapors.
2 Likes
Ha! That reminds me of the gas chamber. Don and clear the mask. Cover the exit and blow out. Cover the inlet and suck in to seal the mask and test airtightness. Proper procedure until you run a buck knife through the lieutenants filter the day before the gas chamber. 
He went 4 times through the chamber. each time gaging and choking. We would run over and tell him to adjust the straps because the mask wasnāt sealing properly. Those straps were so tight by the 4 try his ears must have been pulled over his eyes.
6 Likes
I think the Auntās cat and I felt the same way about each otherā¦
Iāve often read that IPA is good for stripping models, but when Iāve tried it, all it does is make the model stickyā¦ Am I using the wrong Brand?
https://cdn.shopify.com/s/files/1/0485/5591/7475/products/Canstockimagesoct2022-2023-02-22T111812.371.png?v=1677064764
CS Gas? Thatās what they used on us. They gave us a sniff test of something aromatic to test the mask seal before we entered the chamber, but then told us to take it off before we exited and the chamber was properly purged. I think that was pure sadism, it felt like my sinuses were being given a barbed-wire pull through. As well as the masks we were given hooded cloth overalls to put on over whatever we were wearing to the office that day as CS is a bitch for secondary contamination.
Cheers,
M
2 Likes
They had to prove to you that the mask worked.
2 Likes
Yeah, the first time is bad. The more you go through it, the less itās an issue. I kept being scheduled to go for requal, so I stopped changing uniforms afterwards. A great way to crop dust folks in the office who didnāt expect it. 
Surprisingly after a few times, I wasnāt scheduled to go back.
3 Likes
So Iāve heard. One of the problems of repeated exposure is supposed to be becoming sensitised to the stuff, but anecdotally I understand building a tolerance is more common; apparently in Northern Ireland during the height of the unrest the āusual suspectsā turning up mass public disorder events were damn near immune. I believe respirator fit tests were supposed to be repeated at set intervals for persons not wearing them during their everyday activities but for me they were rare, it seemed more frequent for the folk who needed smaller sizes or individual fit (mostly just the women); even during evac drills we just grabbed a āone-size-fits-allā from the lockers but left them in their sealed bags unless instructed otherwise. On one occasion I needed to visit the toilet, left the damn thing on my desk and wore a large post-it note saying āVirtual Respiratorā. I was taken to task for this by a lady supervising events, and my attempted excuse that I required both hands to urinate was greeted with withering scornā¦
Cheers,
M
5 Likes