I cannot figure out PETG . . . please help
Posted: Wed Aug 30, 2017 4:03 pm
Ok so what’s the secret to PETG? I’ve read countless posts and tried countless variables.
I’ve been trying to print this part for last last 4 days.
https://www.thingiverse.com/thing:2345304
P0087
My machine: Rostock Max V1 (yup an old trusty V1, modified of course)
Greg Wade extruder (properly calibrated)
E3D V5 – 0.4 nozzle
Duet Wifi upgrade
Carbon fiber rods with traxxas ball joints
Using Fablam build surface with boro glass plate.
Plexiglass enclosure
Using mattercontrol as my slicer. . . more on this later.
So what’s the deal? I’ve got a roll of e-sun Transparent blue (its literally only a few days old, so there shouldn’t be any moisture in it, and I remove it, place it in a bag from the machine before going to bed so again no moisture.)
I print with a bed of 60C and a nozzle temp of 250C. The stuff sticks well. My first layer looks great aside from a few spots (more on that)
Extrusion multiplier 1.1
150% width on the first layer only
So here’s the issue. I got to print my first layer at 15mm/s, super slow, anything higher and I get issues. And here comes the problem:
When I build the part up, everything looks good till I get on “top of the support material” . . . . the system thinks I’m running another first layer so it slows it down from 30mm/s to 15mm/s. Then it just globs up something terrible, it picks up its own strays and looks terrible. After the first layer, the system picks back up to 30 and it looks ok.
Retraction is another thing. I know the greg wade extruder is slow but high torque extruder. I like it for my Bowden setup. I’ve tried running 30mm/s to 100mm/s extrusion. System doesn’t like slower speed, but it mangles the petg something fierce after about 5 hours or printing. . . I’ve tried all kinds of priming and retraction settings from 2-4mm with 1-2 sec delay and 0.5-2mm additional priming.
I know it’s a lot but I’m at loss (including my last weekend)
-What are some nominal retraction settings to use with PETG and a greg wade type extruder in a Bowden setup?
-What do I do to print at a faster speed on top of the support material without affecting the speed of the first layer at the build plate?
I’ve been trying to print this part for last last 4 days.
https://www.thingiverse.com/thing:2345304
P0087
My machine: Rostock Max V1 (yup an old trusty V1, modified of course)
Greg Wade extruder (properly calibrated)
E3D V5 – 0.4 nozzle
Duet Wifi upgrade
Carbon fiber rods with traxxas ball joints
Using Fablam build surface with boro glass plate.
Plexiglass enclosure
Using mattercontrol as my slicer. . . more on this later.
So what’s the deal? I’ve got a roll of e-sun Transparent blue (its literally only a few days old, so there shouldn’t be any moisture in it, and I remove it, place it in a bag from the machine before going to bed so again no moisture.)
I print with a bed of 60C and a nozzle temp of 250C. The stuff sticks well. My first layer looks great aside from a few spots (more on that)
Extrusion multiplier 1.1
150% width on the first layer only
So here’s the issue. I got to print my first layer at 15mm/s, super slow, anything higher and I get issues. And here comes the problem:
When I build the part up, everything looks good till I get on “top of the support material” . . . . the system thinks I’m running another first layer so it slows it down from 30mm/s to 15mm/s. Then it just globs up something terrible, it picks up its own strays and looks terrible. After the first layer, the system picks back up to 30 and it looks ok.
Retraction is another thing. I know the greg wade extruder is slow but high torque extruder. I like it for my Bowden setup. I’ve tried running 30mm/s to 100mm/s extrusion. System doesn’t like slower speed, but it mangles the petg something fierce after about 5 hours or printing. . . I’ve tried all kinds of priming and retraction settings from 2-4mm with 1-2 sec delay and 0.5-2mm additional priming.
I know it’s a lot but I’m at loss (including my last weekend)
-What are some nominal retraction settings to use with PETG and a greg wade type extruder in a Bowden setup?
-What do I do to print at a faster speed on top of the support material without affecting the speed of the first layer at the build plate?