A little bit of Material Science first:
PET is made from terephthalic acid ('TPA') and ethylene glycol ('EG') (CH2OH)2
PCT is made from terephthalic acid ('TPA') and cyclohexanedimethanol (‘CHDM’) C6H10(CH2OH)2
If you react TPA with both EG and CHDM, you get a co-polymer, called PETg or PCTg.
Usually the polymer is called PETg when the major diol is ethylene glycol (>50%) and PCTg when the major diol is CHDM (>50%).
The higher the EG content the stronger and more rigid the material, the higher the CHDM content the more ductile and impact resistant the material.
PETG -> Strong and rigid
PCTG -> Ductile and impact resistant
Our PolyMax™ PETG is a modified PETG with enhanced fracture toughness which makes it more ductile and impact resistance.
To conclude, PolyMax™ PETG provides the best of both PETG and PCTG with high strength and rigidity as well as enhanced ductility and impact resistance.
If you are looking to produce the strongest part (high layer adhesion), we recommend to switch off your part cooling fan.
If you are looking for a high quality surface finish, we recommend to switch on your part cooling fan.
Usually the best of both worlds is to leave the part cooling fan at 20%.
- Nozzle temperature:230 – 240 (℃)
- Build surface material:BuildTak®
- Build surface treatment:Glue, Magigoo
- Build plate temperature:70 - 80 (˚C)
- Cooling fan:OFF - 20%
- Printing speed:30-50 (mm/s)
- Raft separation distance:0.2 (mm)
- Retraction distance:1 (mm)
- Retraction speed:20 (mm/s)
- Environmental temperature:Room temperature – 50 (˚C)
- Threshold overhang angle:70 (˚)
- Recommended support material:PolyDissolve™ S1
- Printing Temperature:230˚C - 240˚C
- Bed Temperature:70˚C - 80˚C
- Printing Speed:30mm/s - 50mm/s
- Drying Settings:65˚C for 6h (Only if the material has absorbed moisture)
- Direct Drive Retraction Distance:1mm
- Direct Drive Retraction Speed:20mm/s
- Indirect Drive Retraction Distance:3mm
- Indirect Drive Retraction Speed:40mm/s