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  1. What is your price for all of them delivered to the US by the cheapest method?
  2. pdzamore

    Springy filament.

    Are you looking for a filament that will compress or elongate? NinjaTek Cheetah (glue stick on glass at 90°C) and 3DXTech 3DXFlex 92A (glue stick on glass at 80°C) both print well on the UM2 and S5. More flexible filaments like Ninjaflex and 3DXFlex 88A are hard to print with the Ultimaker extruders. Cheetah and SDXFlex 92A are similar to hard rubber. colorFabb nGen_Flex is not as bendable as Cheetah or 3DXFlex 92A, but it will spring back really well and has a gorgeous surface finish. nGen_Flex is harder to get to stick to the bed. I print it using PVC cement diluted 1:1 in acetone (80°C bed). To make clean up easier, I put PET or Kapton film down before I paint the bed with the cement. ABS juice probably works too. Finally, Taulman PCTPE is deformable but not squishy. It is the easiest to print of all of these. nGen_Flex and PCTPE are bendable plastics, like a soft nylon. All of are fine to immerse in water.
  3. Does anyone know what the "surface energy" and "adhesion tendency" parameters affect? I assume that Cura uses the input value to calculate another parameter (e.g., a temperature, speed, acceleration, or jerk setting), but nowhere can I find how the parameters are used by the Cura algorithm. Given that Cura is open source, it is weird how much more opaque it is than Simplify3D, whose customer support will explain exactly how any user-set parameter is used by the software.
  4. I have a related question about ironing. Does ironing apply to the top layer of support? Is there a simple way to apply ironing only to support?
  5. (1) I print mainly carbon- and glass-fiber reinforced materials. (2) with the Bondtech, I can print Ninjaflex and other flexible filaments at reasonable speeds. And even with the improvements to the Ultimaker extruders, the Bondtech QRs are still much better.
  6. I run a pair of Bondtech QR’s on my Ultimaker S5. I added M92 E492.45 ; set E-steps to 492.45 M500 ; saves value to the start G-code in the printer’s machine settings. It isn’t elegant, but it works. The only time I have to send the gcode manually to the printer is when I restart and want to do an xy calibration. (Getting the E-steps right doesn’t matter for filament changes.) Otherwise, the E-step values are stored on the printer. I did have to disable the flow sensors in the printer settings, but I’m almost done prototyping a housing that adds the UM S5 flow sensor hardware to the Bondtech QR’s.
  7. I modified a bunch of cores and have a few 0.4 mm nozzles left over. I’d be happy to send you one by US mail. Email me your shipping address: phillipzamore@me.com.
  8. That’s what I have been doing! Didn’t know about the bug—that makes me feel better.
  9. Would it be possible to add "prime extruder 1" and "prime extruder 2" steps to the xy calibration routine? I often have the calibration fail because the UM S5 retracts the filament too far, so it tries to print when the filament is not at the end of the hot end. Moving the filament to prime the hot end before running the calibration does not help, as the retraction appears to be part of the routine itself. Thank you!
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