Got my K2 Pro and was thrilled how well the prints stuck to the bed with no glue. I ran about 20 prints and thought it is about time to do some lubing. So I grabbed the grease that came with the printer and put a little dab where appropriate. I though this was a great idea to use grease since it will stick well to the components and it is official 3D printing Grease. WRONG!
I am working exclusively with ASA and a heated chamber of 45C. After about two prints I dismissively noticed that the front glass was blurry, then my prints would no longer stick without glue. I’ve pondered this for a couple days and have come to the obvious conclusion:
**The Grease is Out Gassing and filling my chamber with grease residue!
**
I suggest sticking with gun or sewing machine oil (possibly hydraulic oil) but I now have to wonder if even those out gas at 45C. I will be investigating high temperature non gassing oil.
Standard accessories provided in the package include:
A high-quality toolbox containing hex keys, pliers, side cutters, and an L-wrench set.
A USB flash drive with pre-loaded files or software.
A glue stick and metal grease for maintenance and bed adhesion.
A spatula/scraper for model removal.
A quick installation guide with QR codes for the Creality Wiki and Cloud app.
LOL
LOL
Not sure that is the case. It says the glue stick is for maintenance and the metal grease is for adhesion.
Anyway. I have not had to change a nozzle yet but can anyone confirm this. Metal Grease tells me it is for Metal on metal lubrication.
Furthermore, that is sincerely very good that you have machine that are reliable but you failed to suggest why and what you use as lubrication.
For the record the grease for the nozzle is not the same grease as is intended for lubrication. I have wiped clean a few times and the residue, while not as bad, is still showing on the glass after a few prints. I am of the strong opinion that this grease should be avoided, especially for a heated chamber. Only acetone and steel wool has been strong enough to make the bed plate usable again. Still have to use glue.
Update on what I consider a very important subject that is not getting any attention.
The grease provided with the printer out gasses and ruins the bed sheet.
After a week of wiping down the printer after each print, I think I have most of the residue gone.
I received a new bed sheet, put it in and started printing with great results.
I sprayed the PTFE lube on a paper towel and wiped it on the metal to metal. Won’t know for a long time the effects of that. Apparently it take 24 hours for the PTFE to cure but I’m going to just run it.
There should be a in depth investigation into this as I am convinced the out gassing permeated the PEI sheet on both sides and ruined it. I suspect the whole industry is being effected by outgassing lubricants.
