PETG (Sorry, probably redundant)
I just have a question or two so I can make sure I understand correctly from what I have read.
I have a stock Core One (with a filter ad on) and the stock smooth build plate.
I have one roll of black PETG. I have printed it before with my core one. I did have a lot of trouble removing it from the build plate.
If I understand correctly, PETG requires either adhesive glue or a textured build plate. And/or both.
I really don't want to mess with my Z head position. I can be absent minded and don't want to have to balance too many variables all the time. That's why I like the Core One - It is "supposed" to just work and for the most part it does what I want. For now.
I am planning to buy some new parts soon, but not quite yet. In the mean time, can I get buy with just putting a layer of glue on my build plate? I have some Elmers purple roll on glue I used on my old printer that got the job done. I don't have any spray glue ATM. I want to do more with PETG in the future, because I like to make pose-able figures and PLA just warps and is too loose.
RE: PETG (Sorry, probably redundant)
If you have any glue stick from office supplies at hand, just give it a shot. Wipe it loosely over the print bed, and it'll surely work as "separating agent". You can also take a wet paper towel, scrub the glue stick residue on the print sheet into a slurry and redistribute. It's not rocket science, more like cooking. A few molecules of foreign material will make a huge difference to kill adhesion (fingerprints come to mind, very effective).
If you change your mind, it's water-soluble - hot water, optionally soap and a brush and the print sheet is back to its original state.
Using it to make prints stick is more problematic - I got one glue stick from Prusa that works amazingly well. Then three other brands sourced locally plus the same product as the Prusa-sourced stick but from Amazon. They are all hopeless.
Do yourself a favor, order a spray can of dedicated 3D printing adhesive from your local 3D printing supplies web shop and remove that problem once and for all from the list of potential issues. It's twice the price per liter of IPA but you'll probably need less so bottom line even cheaper than cleaning.
Sidenote: if PLA warps, something may be wrong. It's the material-of-choice for best dimensional accuracy but needs cooling. Double-check your printing profile whether it's truly set for maximum print quality or compromises on noise-sensitive ears. PETG won't make printing any easier over PLA, which remains the best choice if only appearance matters.
"Too loose", directly after printing? Increase extrusion multiplier.
PLA will creep under mechanical stress. E.g. a LEGO-style snap-fit connections in PLA cannot work long-term, glass transition is too close to room temperature. That's where higher-temperature materials come in.
RE:
Sidenote: if PLA warps, something may be wrong. It's the material-of-choice for best dimensional accuracy but needs cooling. Double-check your printing profile whether it's truly set for maximum print quality or compromises on noise-sensitive ears. PETG won't make printing any easier over PLA, which remains the best choice if only appearance matters.
"Too loose", directly after printing? Increase extrusion multiplier.
PLA will creep under mechanical stress. E.g. a LEGO-style snap-fit connections in PLA cannot work long-term, glass transition is too close to room temperature. That's where higher-temperature materials come in.
Its not that it comes off bad of the printer. It's over time, the material will warp. It's tight at first, but loosens so things like ball and sockets become very loose. That's a known issue which is why I see all the folks who make them suggest PETG or ABS.
The mechanical creep is exactly what I am talking about.
RE: PETG (Sorry, probably redundant)
I've never found PETG to be more difficult to print than PLA. In fact, I've found the opposite. For me, it's much easier to print with the exception that it's more hydroscopic than PLA so you need to keep it dry. PLA is brittle, it creeps, it warps, you can't put it near a window. The only upside I suppose is it comes in a lot more colors and textures.