First time useing PTEG on a new Prusa ..need some help  

RE: First time useing PTEG on a new Prusa ..need some help

There are 3 primary reasons you don't get first layer adhesion, your z-offset is too high, your bed is dirty, or both.  From the spots all over your bed I'd say it's at least dirty.

Cheers

-Bob

RE: First time useing PTEG on a new Prusa ..need some help

Agree on what @bob-2 said, plus: .. PEI print sheet is good for PLA, but has poor PETG adhesion. For PETG, textured (or satin) print sheet should be used.

RE: First time useing PTEG on a new Prusa ..need some help

I would highly recommend putting some glue on your build plate to help with adhesion if you’re going to use the PEI. I use Polymaker PetG and lowering the z hight, cleaning the bed with isopropyl alc, and adding glue gave me a pretty good success rate. I just use the glue stick that came with my MK3 and it works well enough.

RE: First time useing PTEG on a new Prusa ..need some help

Thanks for all the replys I'm new to 3d Printing and after having great sucess with a few days non stop of PLA I guess the drastic difference in PTEG threw me off ..I dried my PTEG for 10hrs or so and Really put a good cleaning on the plate ..beyond just the Isoprpyl wipe down that was doing fine for PLA ...right now I'm an hour into the 2nd try for the PTEG and so far seems much impreoved but not perfect .. I did have a couple strings on the first layer but for now it seems to be fine  im sure I'm gonna need to do some fine tuning to get it consistantly nice, thinking a heat tower test to find the best temp for this filiment  for starters ? any suggestions from a more experienced eye are welcome, a solid above and beyond bed cleaning was a big help

RE: First time useing PTEG on a new Prusa ..need some help

I find the textured steel sheet better for PETG. 

RE: First time useing PTEG on a new Prusa ..need some help

Some folks seem to have difficulty printing PETg on the smooth plate.  I do most of my PETg prints on the smooth plate and I've never had issues.

I consider PETg to be a very good general purpose filament, within reason.  It does not do as well as PLA or ABS for highly-detailed prints, but for larger pieces it's great.

I use it quite a bit for things like project boxes, model railroad building facades, etc.

I almost always use Layerneer for PETg prints, both as an adhesion booster and as a release agent.

'PETg is the new PLA' was a saying that was going around maybe two years ago or so.

RE:

@sozo13

I believe @bob-2 is correct. Adjust  your Z lower and for sure clean your sheet soap and water.

PETG Prints great PEI.

I own Several of each type of plate and have been printing on PEI for years, If anything PETG sticks to well to the Smooth PEI sheet and I spray a Squirt of Original Windex glass cleaner on them so I can release the print without damaging my PEI.

If you really can't get your PETG to stick you may want to consider cleaning your PEI sheet with soap and water, then use Windex, or even, believe it or not (oils from your skin) as a release. If you make a mistake and stick the PETG to the sheet to well, let it cool completely, if it still won't release put it in the freezer, but only for 15 or 20 min then take it out and let it warm a bit and try again, and if that doesn't work you can try boiling water 100C (yes the print will deform but it will come off.

Regards

Swiss_Cheese

RE: First time useing PTEG on a new Prusa ..need some help

I can say for sure my original prblem was with it sticking to the plate ..now if its good and clean its almost too good, I've ordered a second plate so I have options .. lots of good advice thanks