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Feed speed

I'm still struggling to get my 3D Chameleon to operate properly. Yesterday, I decided to start over configuring PrusaSlicer, closely following the Chris's Basement video 3D Chameleon - Part 3 - Your First Print. In it, he instructed me to create a script to measure the feed speed of the 3D Chameleon. His results were 34.5mm per second. My results, on the other hand came out to only 17mm per second! Is there a method to improve the speed of the 3D Chameleon feed?

Thanks!

9 comments

9 Comments

Alan

Mar 30

If his numbers are right in that video the feed rate should be ~F2070 to match the Chameleon. I've been using F2040 on mine and it seems to load more smoothly now. I'd confirm your speed, and then base your number on that. Take your mm per second speed and multiply it by 60 to get your F speed (mm per minute)

Edited

Bill

Mar 30

Not on the Mk3... but our new Mk4 firmware will have a fix for that. However, I'd question that number... make sure your tension is set correctly and that it isn't slipping... Confirm that it does it equally on all 4 extruders and that it does it in both directions. If there is any variation between any of them by more than 5mm, then something is wrong. Bill

Alan

Mar 31

Replying to

IDK why but they are uploaded as one STL. You have to download that STL and open it in your slicer and split it. This is usually found by right clicking the model, but might be different depending on the slicer. Once you do that you can pick one and delete the rest, then multiply it 7 times so you have 8 of the same slider. The stock ones are +2.00 tension and -.25 spacing I believe. That's top right in the grid of sliders. Try the top-middle or top-left one. You only have to change this for the filament paths that are having cross-talk, but you could just swap them all out if you want.

las_vegas

Apr 01

Replying to

Well, I took my 3D Chameleon apart again today only to discover my feed gears were still slightly off. I've alligned them again, checked and rechecked. They're right now. I ran a test on each port and they all worked correctly. I was also able to measure the feed at the source and all four feed exactly 350mm in 10 seconds. So 35mm per second and 2100 to set the extruder load speed.

I was about to run the Chris's Basement test on it when my PC decided to freeze. I'm almost there! I'll try again after dinner.

wjsteele

Apr 01

Replying to

When you download from Tinkercad, just select the model you want to export... And it will just do that one model. If you don't have any selected, it will download the entire design surface as a single STL.

Bill