Ethyl alcohol


#1

Just did my first print. My facility has ethyl alcohol in stock, which I assume will not be good for use in the form wash, and I’ll need actual IPA. But want to confirm this.

Do I need to wash off any residual resin off the build platform after each print? Or just pry the model off and go on with the next print?

Thanks


#2

No comment on the alcohol choice but you need not wipe the build platform unless you change materials. That is still useful/good resin!

If you want to work with the build platform you can scrape some of that off into the tank.


#4

Thanks for the info!

Would it be good practice to use a different build platform for different resins


#5

“Methylated spirits” aka “Denatured alcohol” is far cheaper here in New Zealand than isopropyl alcohol ($18/4l vs $38/5l), as well as being available at hardware stores which IPA is not (I have to order it from an electronics supply company).

Whether it’s as effective or long-lasting as a solvent I’d be willing to pay the small pricetag to test, the next time I need a refill. Frankly the smell is considerably less awful too.

As for cleaning the build plate, I use mini rafts a lot to save resin, so I run a razor blade scraper (just over the area of the last print) to make sure I’ve caught any tiny pieces of cured resin still stuck to the build plate.


#6

Thanks for the responses. I ended up using IPA.