Thanks for reply.
speed in cura was default : 85 mm/s a part at .25 layer .with 24% fill density.
The part was bad before any tweaks and not really helped by any tweaking of anything.
The knock sound sounds like a grandfather clock. defo coming from the drive. I assume this is not retraction but on the knocking sound the grub counter clock rotates 45 degrees. I think i can determine a difference between intended retraction.
Just disassembled the drive again and will put on some marker as you say. 95% certain this is the case.
Problem being if this knurled wheel IS slipping on the motor shaft and I have max torqued the grub what else should i do to ensure no slippage. might have been a better Idea for Ultimaker to have keyed the end of the shaft rather than rely on mild steel grub. :???:
Draw a line on the shaft and sleeve with a marker and you wont have to guess
What settings are you trying to print at? "70% speed" and "upped flow" tells us absolutely nothing. We need to know the speed, layer height and any additional tweaks you've done in the "Tune" menu during the actual print.
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