I bought a bottle of Magicgoo from Matterhackers a month or two ago because it was on sale and I was getting tired of mixing up ABS slurry and dealing with the acetone-meets-ABS fumes in the process.
It works! Even for ABS, even for ASA, PETG, PLA, the whole lot. It actually does what it says it will.
It looks like it has a bit of a half-life.
The fine print on the bottle that says "Use within one month of opening", is pretty spot on. I did a big ABS printing project recently, finishing off about 2 weeks ago. I continued to use it and it worked great up until this weekend. I just could not get anything to stick no matter how much I applied, how much I slowed down my printing, adjusted the bed temp, etc. I was starting to fiddle w/ Z-height and was getting out the dial caliper to see if the bed had gone out of tram when I recalled the above fine print.
I cleaned my build plate, sprayed my usual PVA(Aquanet) on it and launched the same job that had been giving me trouble.
That was it. So, I don't know if what I have left(about 1/3rd of a bottle) is totally spoiled or not, but it's not holding the way it was just a few days ago. My recommendation would be to get it and use it if you know you're going to be doing a lot of non-PLA printing in one stretch. It works great new, but it doesn't seem to last all that long.
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