Core1 kit and MMU3 - best assembly and optimizations suggestions
I finally am going to have some time to put together my Core 1. I just wanted to know what extra stuff or mods I should do before I start to put it together? I bought:
Buddy3D Camera for Prusa CORE One1
Prusa CORE One kit
Original Prusa MMU3 Enclosed (for CORE One)
It was delivered late August if that matters for revisions.
Mainly looking to not have to assemble and redo stuff. Interested in spool holders that will keep stuff dry and organized. This is going to be my engineering/CF/GF printer, so nylons and such.
What are the best set ups?
RE: Core1 kit and MMU3 - best assembly and optimizations suggestions
Hi,
>> looking to not have to assemble and redo stuff
I understand but the most efficient path is sometimes not the most direct one. Rather save time and energy by tackling problems one at a time.
Core one Kit, top of the list: Gantry alignment (brutal use of manual force bending metal that is not part of the official instructions. It is part of an official appendix to the instructions though so do your homework and save yourself some iterations).
Belt tension / gantry alignment, get an understanding before putting on the printhead. Use common sense e.g. detach idler pulleys when assembling the printhead even though instructions says otherwise.
MMU: put it aside for later. You want to start with a printer that runs smoothly before "upgrading". Instead of: "I have a problem that may be related to stuck filament or not and it may get stuck in the MMU". Don't start setting up a permanent workspace - the spool positioning with MMU is obviously a deciding factor. But I didn't feel I had to unnecessarily revert any earlier assembly steps when putting on the "enclosed" MMU after a month. It wasn't available when I bought the kit - when looking back, the best thing that could have happened.
Recommended upgrade for MMU: A clip that straightens the PTFE tubes entering the MMU (I never had problems inserting filament but there are frequent complaints it's difficult)
Use a RC firmware at least for the strobe belt tuner. Then revert back or keep it (switching versions is easily done).
RE:
oh, and (personal opinion, no community consensus or anything implied):
Use a tiny amount of blue Loctite between any metal pinion and metal motor shaft ideally on the opposite side of a set screw. The idea is that the torque is transferred over the glued area so there is no constant change of direction on the set screws which would eventually rattle them loose (even if "loctited").
The plan for disassembly is using e.g. a soldering iron to mildly heat it (threadlock softens already at moderate temperatures) and an old bicycle tube to grab pinions, wiggling them back and forth against a clamped shaft (e.g. vice).
RE: Core1 kit and MMU3 - best assembly and optimizations suggestions
I'd recommend using a loctite stick, as opposed to liquid.
I was able to get the MMU3 to work properly, after Prusa gave me completely wrong information.
Oddly, it doesn't like my ASA or PLA filaments when it comes to unloading the filament from the MMU3 / Core One. Still trying to figure that out...
It is VERY sensitive to the filament being straight while loading.