I like print PETG on sanded Garolite, no glue needed. Or I also use borosilicate glass and hair spray. A textured PEI plate can also be printed on. Garolite is my favorite.
Try these settings
Bed 75C (80C for Garolite)
First Layer 10-15mm/s
Additional layers 25mms perimeters
Fan OFF (never use the fan until absolutely needed)
If at first you don't succeed, try, try, try ten times again...
I am not sure why such a simple project took me so many times to complete. So I finally got the idler the correct size with the Gates machined pulley. The original pulley is smooth with a 3mm bolt shaft. You are not supposed to use a flat pulley on the tooth side of belt. I used the M3 bolt, but with a 6mm aluminum spacer. Works perfectly and will keep the teeth fresh.
I own very large industrial printers which use these larger nozzle sizes. I disagree with the part being stronger with larger layers. And you lose your precision around hardware openings. Just because they say it on Youtube, does not mean that it is true. These channels are opinion hosts. Take a look at my Pulse custom parts thread. I can give you my petg settings, but they will vary depending on your hotend hardware. I just designed and installed a new hotend which lowers the heat sink temperature for cleaner clear petg printing.
If you have any questions, please feel free to ask. Or visit us on Discord here: MatterHackers Discord Server
My clear petg. I prefer to print with clear, as the pigments tend to make petg "Goopy" to print.
The Pulse firmware is available on Github. But you will need to compile a custom build for that board.
Alternatively, if you follow any of my posts, you can add a Duet mini 5, use my compile which is already made. I have been working on a new electronics enclosure for this. In my opinion, Duet makes the best cnc boards for printing.
Even if you don't use the Gates modified tensioner, I am finding that the modified x-axis idle side bracket slides nicer than the original one with the original tensioner. I used a 8mm straight ream in the linear rod slots and they fit nice at snug.
X Idler Gates Mod Tension Files
X Idler Gates Mod Files
I bought a spool of Ninjaflex recently and have not had any unexpected problems on my Pulse-XE.
The parts I have printed with it using the profile for Matterhackers flex filament were good - not beautiful, but functional. I think it's tough to tweak it in to get high quality, but what I got was adequate.
One thing I would mention is that I pitched the stock Bowden tube and replaced it with a Capricorn tube of much higher quality and tolerances - That is important for printing with Bowden tube printers and Ninjaflex - You don't want a lot of room in the tube for the filament to bind against the walls.
@bedellkw I have both slice engineering and E3D hot ends. In my opinion, the E3D is better. The first time you get a clog in the hypodermic needle on the Mosquito, you will understand why I prefer E3D. I do not use a "stock" E3D. I have a E3D copper block, I use Sliceengineering heaters and p1000 thermo couplers and a titanium heat break. And I use a metalic nut on the threaded heat sink. To quick change the nozzles I use a nozzle t-wrench and a "thin" 16mm spanner to hold the block. With these proper tools, the nozzles are easy and quick to change.
Use hardened nozzles only. If the nozzle becomes clogged, heat with a torch until cherry red. This will burn off the plastic, but ruin the tempered steel. With the cherry red nozzle, drop into antifreeze coolant in a metal tin can. This will re-harden the nozzle and you can continually use it this way.
@cope413 Just to recap, when we started, the Z motors were dialed too high and acting up. Not sure if we determined why this was set this way...
We then re flashed the firmware. PID calibration obviously is not working or providing us reasonable values...
My first calibration gave me
My second calibration gave me
These kept the hotend 20c below the set temp no matter what I set it at.
We then bumped those up to your suggestions (still not sure why a self PID calibration did not give us reasonable values)
Now its getting higher but staying 3-4 degrees below set temp and fluxing heavily between 3-4c below set temp. This is with the nozzle even at HOME Z up and away from the bed.
So what we still have is a lot of unanswered questions on why this specific printer is acting so strangely...to begin with.
Spoke to David Gaylord and at this point, we both are just not sure why we are still messing with this printer when it clearly had issues early on....