@Gabriel_Coleman
That reminds me…for about $150 you can have them dicronite coated making them very slick.
@ThantiK What works for me is this:
Heat the block upto a temperature that melts the pla, then whipe them clean with a wet ‘natural’ (non burning or melting) sponge. (Like the sponges that come with a soldering iron)
You want the heater blocks clean for as cheap as possible and with the least possible work to do it? So do I interpret the comments from you. My suggestion is then: Throw them away. Buy 20pcs from aliexpress for 10$ including shipping. Wait 2 weeks. Done. 🤷🏻♂️
@ThantiK I didn’t realize that you were doing that for work. Guess I missed that part. Personally I just bought a 6 pack of cheap ones from eBay. When one really starts looking like crap and doesn’t want to clean very well. I just pitch them and put on a brand new one. $12 with free shipping in 3 days (well for me anyway). At this price it’s not worth the effort…
https://rover.ebay.com/rover/0/0/0?mpre=https://www.ebay.com/ulk/itm/202259711323
Acetone will clean PLA also just soak longer, I just keep a jar with an inch or two of acetone in it. When I need something cleaned drop it in and soak for a few days. May take a few soaks depending how thick it is caked on or inside a nozzle may have to clean some out and soak some more.
Has anybody try to immerse in liquid hydrogen? Does it peels?
@Robert_Rinehart depends a bit on the PLA blend, some are more or less acetone resistant
@papablo_papapablo no, I am pretty sure no one has immersed a dirty hot block in liquid hydrogen. Do you mean something else?
I’ve always just heated in place and wiped with thick wad of paper towels
I use sandpaper or dremmel with round sandpaper cylinder, but you remove a smal amount of the metall too, but the aluminum dosn’t cost much so you can do it a few times