Things you should know about PETG | Poal: Say what you want.

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[–] [deleted] • 0 pt

Great comment from the vid:

After a lot of PETG printing, much of what Thomas said is is good info .. Everyone has their preferred approach, here is mine: .. to reduce stringing > NO Z lift (using Z lift creates a string of material) > Tweek flow rate within 1%, reduce flow rate so that nozzle does NOT drag through the layer being printed > Be aware that optimum nozzle temp varies considerably between PETG brands (I run eSUn at 240C and Hatchbox at 250C) > careful trying to use large retractions, as material may freeze off and jam nozzle due to high print temp, I limit retraction to 1mm > Print SLOWLY ~30mm/s to get reasonable cosmetic appearance,, infill faster 40mm/s, and travel VERY fast >80mm/s to break & reduce stringing > print on PEI surface, NO tape or spray required! ... adhesion will be VERY strong, may require a razor blade carefully slide under to release parts .. but very few parts will come loose during printing Timelapse example of PETG printing a finely detailed thin wall set of camera cases for a 360 video camera I designed... camera external faces are fully filled smooth surfaces printed against the PEI top sheet .. but you will note the inevitable stringing at the end of the print job, which must be cleaned away ... that said, these parts were great, are flexible, tough, and handle the high operating temperature of the camera boards (a job ABS or PLA can NOT do): https://youtu.be/-kyHJ1AfNyw https://www.thingiverse.com/thing:1884782 Also another example of a durable PETG designed drone, a very large 7 pound flying monster with nearly 4hp of power .. many flights and NEVER broke a single PETG printed part: Video flying / landing: https://youtu.be/zmkWxsa_Sg4?t=16s https://www.thingiverse.com/thing:2420214 Overall, IMO, PETG is the single best material for mechanically functional parts, the trade off is accepting a cosmetic appearance less than that of ABS or PLA. PETG is more flexible, tough, and temp resistant than PLA .. and stiffer & stronger than ABS, and does not shrink/warp like ABS (I hate ABS, basically worthless IMO).

Great comment from the vid: >After a lot of PETG printing, much of what Thomas said is is good info .. Everyone has their preferred approach, here is mine: .. to reduce stringing > NO Z lift (using Z lift creates a string of material) > Tweek flow rate within 1%, reduce flow rate so that nozzle does NOT drag through the layer being printed > Be aware that optimum nozzle temp varies considerably between PETG brands (I run eSUn at 240C and Hatchbox at 250C) > careful trying to use large retractions, as material may freeze off and jam nozzle due to high print temp, I limit retraction to 1mm > Print SLOWLY ~30mm/s to get reasonable cosmetic appearance,, infill faster 40mm/s, and travel VERY fast >80mm/s to break & reduce stringing > print on PEI surface, NO tape or spray required! ... adhesion will be VERY strong, may require a razor blade carefully slide under to release parts .. but very few parts will come loose during printing Timelapse example of PETG printing a finely detailed thin wall set of camera cases for a 360 video camera I designed... camera external faces are fully filled smooth surfaces printed against the PEI top sheet .. but you will note the inevitable stringing at the end of the print job, which must be cleaned away ... that said, these parts were great, are flexible, tough, and handle the high operating temperature of the camera boards (a job ABS or PLA can NOT do): https://youtu.be/-kyHJ1AfNyw https://www.thingiverse.com/thing:1884782 Also another example of a durable PETG designed drone, a very large 7 pound flying monster with nearly 4hp of power .. many flights and NEVER broke a single PETG printed part: Video flying / landing: https://youtu.be/zmkWxsa_Sg4?t=16s https://www.thingiverse.com/thing:2420214 Overall, IMO, PETG is the single best material for mechanically functional parts, the trade off is accepting a cosmetic appearance less than that of ABS or PLA. PETG is more flexible, tough, and temp resistant than PLA .. and stiffer & stronger than ABS, and does not shrink/warp like ABS (I hate ABS, basically worthless IMO).

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