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neotko

Simplify3D retraction bug that can drive you nuts :)

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This is bug that has been quite weird, but I think some users on S3D forum reported it, year ago, and still is unfixed and seems noone explained why or how to reproduce it.

So, here I go =)

When using multiple processes S3D thinks of each process as a new print, and their planner aligns them so they print 'right'. The problem with this is that he also thinks that when moving from process A to B the tool is different, so, he does a Tool Retraction Distance if you have wipe at the end of a loop, or Z change... Well, mostly, it does it correctly, but it forces a very very long retraction, that can end up adding blobs (because the head stays retracting more time) or it could, on Full Metal hotends, to clog.

So... If you use one hotend, just change the Tool Change to 0, distance 0, but don't touch the speed (or set is as the same your main settings use)

But if you use Two or more hotends, you will need to make your own toolchange retraction distance on the toolchange script area (not hard at all).

So to show my point, I just made made two prints one with this

5a33285b3880e_Capturadepantalla2017-03-16alas0_56_11.thumb.png.378817d4b8746ca21143773445e91231.png

And other with the values set to 0 (again, except the speed)

And as you can see, the retraction bug disappears

5a33285b4cdc0_Capturadepantalla2017-03-16alas0_58_25.thumb.png.9697011772c91f0330a7b62237ccd981.png

So, if you use S3D multiple process, and a single hotend, or two, and you want to enjoy the wonders of wipe, coasting, retract-while-wipe, etc.. You NEED to set the toolchange distance to 0 and if you use multiple hotends, make your own E- script for the tool change.

And, why this is important btw? Because the bug makes the whole print slower, and full of weird retraction distances. Check this Gcode compare, Left is bad, Right is ok. For Full metal hotend users, this is a very important thing to check.

5a33285b67755_Capturadepantalla2017-03-16alas0_58_49.thumb.png.042494914ebd0ef36dd28ebbef47751a.png

5a33285b3880e_Capturadepantalla2017-03-16alas0_56_11.thumb.png.378817d4b8746ca21143773445e91231.png

5a33285b4cdc0_Capturadepantalla2017-03-16alas0_58_25.thumb.png.9697011772c91f0330a7b62237ccd981.png

5a33285b67755_Capturadepantalla2017-03-16alas0_58_49.thumb.png.042494914ebd0ef36dd28ebbef47751a.png

Edited by Guest
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