ABSynthe is a simple brew of filament scraps and acetone. Brush it on your build platform and your ABS prints will be a lot more likely to hold fast for the duration of a print.
You’ve probably got some ABS filament ramen or failed prints scattered around your workspace. Chop them up and drop them into a jar of acetone. Feel like Walt from Breaking Bad disposing of the evidence.
Don’t overthink it, just add enough acetone to make a thin syrup. Huff not the ABSynthe.
I mix my ABSynthe in an (empty) 3.6 ounce jar of Proraso Pre-shave Cream. It’s a convenient size and the plastic top won’t dissolve from the acetone fumes. Plus, it’s imported from Italy.
She’s-a-make-a-you print-a stick-a-real nice-a.
Dip a paper towel in the ABSynthe and smear it across your HBP.
Getting ABS prints to stick to a heated build platform can be an art. I’ve had excellent results with some ABS spools, where they melt just enough to stick throughout the duration of a print, but some plastics just don’t like my kapton tape. They end up going for a ride around the platform and I’m left with a big bag of fail.
Note that I’ve pretty much given up covering my entire HBP with kapton. I realized I was mostly printing fairly small things, and it didn’t make sense to spend the time ironing out all the bubbles and rending my garments when the kapton bunched up.
So I just lay one strip down the center of the HBP and I’m a much more relaxed person now.
That schmutz on the kapton is the ABSynthe. I haven’t had a print slip off the platform since I started doing this. I’m generally printing ABS at 120°C.