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Extrusion head too high first layer prusa I3 aluminium

Posted: Fri Jun 09, 2017 1:05 am
by yam300
Hello, I have a problem with printing the first layer with my prusa i3 aluminium.

I have just finished to build my printer.
I did the initial adjustment with a piece of A4 paper, then I make an auto home, but when I print the first layer there is a gap of at least 4 mm between nozzle and the the surface of hotbed.

Wich parameter should i do ?

Thank you.

Re: Extrusion head too high first layer prusa I3 aluminium

Posted: Fri Jun 09, 2017 9:51 am
by William
After you calibrate the hotbed,the first layer should be printed in the home position.So It really sounds weird.Have you adjusted the screw which is used to trigger the Z axis' endstop like the pictures showing?
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If it still cannot work,could you take a video about it as much more detail as possible?You can upload the video to Youtube.Then just send the video link in this post.

Re: Extrusion head too high first layer prusa I3 aluminium

Posted: Mon Jun 12, 2017 12:09 am
by yam300
Hello,
Yes, I adjusted this screw but without result.
However I saw in a forum that someone to change a value, and apparently it fixes the problem, I changed the Z step to 2560 by 400 and apparently. Why am I forced to change this parameter ? Is there a wrong firmware 8 mm rod ?