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Issues printing with NYLON on 3D45

by MAKERMAKERS

Hi everyone,
I have a new Dremel 3D45 printer. I am testing out printing with Nylon and running into issues. PLA seems to print perfectly, but when I switch to Nylon I get bad prints. I am printing with a new spool of Dremel brand Nylon filament.
Test Print Images: https://imgur.com/a/rINMWW1
Top view Image: https://imgur.com/a/zFxc3IL
This is the calibration model I printed: https://www.thingiverse.com/thing:1023717

I noticed on the first print I did with Nylon, I had some bad layer adhesion issues. Layers were not sticking together and there were visible gaps between parts of the print. I've been using the default Nylon settings on the Dremel Slicer software. I thought maybe it was the print settings I was using so I decided to do test prints of calibration shapes on the different default settings (draft, medium and high quality). Draft and high quality modes didn't print well at all (stringing issues, super bad layer adhesion issues, not sticking, etc.). Medium quality mode seems to print the best for the nylon, so I've stuck with that one, but still get layer adhesion issues. I've noticed the adhesion issues happen at the last few layers of the print job and also when there is a change to the shape of the model. I've attached a few pictures of what's happening. I contacted Dremel support and they suggested adjusting the nozzle gap and bringing it down to -0.01 mm. So I did that and printed again and this seemed to help with getting the print to stick to the bed much better (I had to pry it with more force to get it off the print bed). It also helped with some of the layer gaps, but they are still noticeable and some parts of the model are splitting off.

I've also attached a picture of a nut/bolt I test printed and you can see the screw part of the bolt is tearing off because it didn't adhere properly to the underlying layers and there large gaps as well.
I've also noticed that when I print with the nylon, it tends to clog the extruder and sometimes I have to pull out the piece forcefully because it won't go through. Support said this is a common occurrence when printing with nylon. They also said it is difficult to print with Nylon because of warping which I've researched online and seems to be the case with Nylon.

Do you know what might be causing the layer gap issues and do you have any recommendations to help resolve this? Thanks!

Easy Material Settings Calibration Piece
by A_R_B
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Print platform no longer at bottom upon completion of print...

by Durs26

I've noticed that my last 2 prints, which were successful, did not complete as usual with the platform being sent to the bottom of my 3d20 for "easy" removal. Is there a setting something that i may have changed somewhere without knowing it? Do i need to re calibrate? This is weird. Anyone ran into this before?

Thanks

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3D45: Need fan shroud assembly for school

by eduncan911

So we had a failed print overnight, and PETG for 8+ hours made a massive baseball size blob all over the hotend assembly.

I was able to break away most of it. However, the victims of this disaster are the heater block and surrounding fan shroud - now fused together in PETG for eternity.
I can pick up another hotend assembly online. However, I need to find a fan shroud.
Would anyone have a fan shroud to donate to a non-profit?

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Long pauses resulting in heat creep

by beaugalbraith

My 3D45 seems to pause during prints, I've tested the gcode on my Ender 3 and there is no pause, so these stops are specific to 3D45. In general this isn't a problem when I'm printing with PLA and ABS, however when using any brand of PETG this long pause combined with 250+ temperature causes the filament to expand.. then when it resumes the rest of the print is completely underextruded. I can't even change filament because there is such a big clog in the nozzle. This is happening every print above 240, but there is no issue whenever I have a very small print and no long pause occurs.

Anybody else experiencing this? I'm about to revert to the previous firmware to see if that resolves the pausing.

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3D45 Calibration Issue

by science_rocket

I have a 3D45 that has an odd problem. When I first got it, it was fine, but recent prints seem to be out of calibration. The Z (vertical axis), and the Y axis (depth) seem fine .. but the X axis seems to print about 5% too wide. That is if trying to print a square plate, the height and depth will be as specified but the width is about 5% too wide.

I have a second 3D45 that seems to no problems.

Dremel tech support seems unable to resolve. Any thoughts?

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Help please, I'm lost here

by AmericanEducated01

So I had a failed print last night and clogged the nozzle. I tried some cold pills and it seemed like there was no clog. I thought maybe my issue was with the step motor, but I had a spare nozzle and decided today was the day to attempt my first repair (or anything really) I have mostly disabled hands so I bought the Dremel 3d45 for its plug and play aspect and it's been great. My 12 year old son removes the prints and I run the slicer. We have been printing 24/7 for a few months now with little issues only.

So we change the nozzle and think we have solves the issue because now the printing purges filament normal. Also when we go to the change filament option material flows through the nozzle like it always has.

I go to print and no material comes out and I hear clicking in the extruder. I test both purge and filament change and again both have the material flowing the same as when everything was fine.

My next idea is to remove everything from the nozzle assembly (head, or whatever its called) and check the step motor. No matter how I word my Google searches for my printer removing and cleaning the step motor.

Would a dirty step motor allow material to flow normally during a purge and filament change? Then just click and extrude zero material?

Dremel 3d45
PLA
190-220
Speed 50
And everything the same as always

Thanks

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Facing problems since most recent firmware update R03.04.05

by MakeCake

Hi there! I'm facing problems with the auto calibration after installing the most recent firmware update for my 3D40. Searching for firmware version below R03.04.05. Does anybody has an idea where to donwload? Seems that Dremel doesn't provide older firmware versions. Thanks a lot!

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Print Issue

by jbeevor

I'm finding I'm getting a similar recurring issue where the print gets slowly out of line and ends up clearly out of sync by the end. Has anyone experienced this issue or have any idea for how to fix it?

Much appreciated.

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Dremel 3D45 camera quality

by Beadsworth

Hi All,

On my Dremel 3D45, the camera quality is low. There are a lot of green artifacts on the image when it is recording. Are others having this issue?

I wasn't expecting an expensive camera. But it is supposedly 720p, which makes me wonder if the camera in my unit is defective. I'm just curious if this is the typical camera quality.

Here's a video that shows the quality:
https://www.youtube.com/watch?v=v3YNkMks5Oc

3d45 camera
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