I hate Hysol!

[LetMeFly]

I just finished gluing the ribs to my vertical stab and rudder. I did the horizontal stab and elevator a while back. I find Hysol the stickiest, gooiest, smelliest, nastiest stuff I've ever worked with! But I've heard that Proseal is also that way, when I used to read the Van's Airforce forums. Has anybody out there worked with both? Which is worse?

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[Brandon Petersen]

Some denatured alcohol and nitrile gloves go a long way! Smelly? Maybe when you first crack the the black open, but it mellows once you mix it…..


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[LetMeFly]

Yeah, I use nitrile gloves, the alcohol on the finger trick, AND an N100 (I think) mask to kill the smell. But it still smells when I go back out there an hour later!

[taff]

All very good respirator info.

But what if the non pressurized respirator doesn't fit?

If you wear a beard, not much chance of the face mask touching the face and making a seal.

What if the mask is too large for your face?
What if the mask is too small for your face?
Make sure you have the correct size that fits you.

A bad fit usually causes (noticed in the case of colored paint) a smear of color by the side of your nose.
That's because the contaminated air (chemical and pigment) had bypassed the filter system and your breathing a trace of contaminant
directly.

Way to find out if it's fitting. Cup you hands and lightly place them over the filters. Don't press or you will be makin a good seal.
Now with hands in place, breath in as you normally would. If you have created a vacuum and the mask clings like the baby alien, then your good.
Adjust the straps accordingly.

It's called a fit test.

[Benbell4140]

I much prefer hysol over proseal. They say you get proseal all over your ear simply by calling to order it lol. But as Brandon mentioned, alcohol really helps. It simply doesn’t stick to you if you dip your finger in alcohol before touching it.


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[Redline]

We (my dad and I) rigged up a way to easily load a plastic bag with Hysol, then tie it off, cut a hole the size of the bead you want, and apply to the part. After that, smooth it out with alcohol on your finger. Super easy and clean.

[Denalifox]

if Hysol bothers you, then Poly Fiber is going to be a real treat. lol.

[bstell]

Did you try the cartridges and gun? It's much more expensive but it sure does make things easier.

[LetMeFly]

Did you try the cartridges and gun? It's much more expensive but it sure does make things easier.

I haven't coughed up the money for the cartridges and gun. I have syringes from Amazon that work well. I figured that if my syringes left a little curly-q when you pulled away from a line of glue, the cartridges would do the same.

I have found one trick. If I let it dry for about 45 minutes, I can form the Hysol like it's putty, and it won't stick to alcohol covered gloved fingers. If I try to form it while it's fresh, it sticks to my gloved finger, even if I've dipped it in alcohol.

if Hysol bothers you, then Poly Fiber is going to be a real treat. lol.

At least I already know how Poly Fiber smells. I attended the EAA fabric class in 2018. They didn't tell us to bring masks and they didn't have any so I got a very bad headache the morning of the second day. I plan to use my P100 mask painting the Polybrush on and will need a positive air supply when I paint the silver and color coats. I don't need to lose anymore braincells!

[Eric Page]

I plan to use my P100 mask painting the Polybrush on and will need a positive air supply when I paint the silver and color coats.

A P100 filter won't stop organic vapors and a positive air supply system is a pretty extravagant expense for this project! The "P" in P100 means it's a particulate filter that's effective against oil-based aerosols, but it won't do anything against vapors. You want a respirator with cartridges rated for organic vapors.

Search for "3M half-face respirator" and you'll see lots of reliable options starting at under $20. Here's the 3M respirator catalog. I've been very happy with my 7502 respirator.

For filter cartridges, here's a 3M brochure that explains all the options. What it boils down to is that you want one of the following types:

6001 - Organic Vapor
6003 - Organic Vapor / Acid Gases
6005 - Formaldehyde / Organic Vapor

You can get a 3-pair pack of 6001 cartridges for <$35. You'll know when to replace them; in my experience they quit filtering pretty suddenly so if you smell the chemicals, it's time.

If you want to filter particulates as well, get a pair of 501 Filter Retainers and a box of 5N11 (for non oil-based particles; analogous to N95) or 5P71 (for oil-based particles; analogous to P95) filters. The retainers hold the filter pads over the outside of each vapor cartridge.

Remember that the Poly Fiber system is Methyl Ethyl Keytone (MEK) based, so you absolutely MUST protect your eyes any time you open a container of Poly chemical. One drop splashed in the wrong direction can be disastrous, as MEK will rapidly destroy eye tissue. Consider a pair of lab goggles, or upgrade to a full-face respirator if you'll be spraying.

Finally, watch out for fakes. Buy your safety equipment from reliable sources.