Step 17 Y-belt-idler bolts too short
On this step we are dealing with printed parts, nyloc nuts, and bolts.
The instructions specify to have the rubber part of the nuts facing away from the printed plastic. I have done so, which means that the small non-hexagonal part of the nut is also facing away from the plastic.
When I try to assemble the roller bearing bolt or the bolts which attach the assembly to the frame, I simply can not get the bolts to catch on to the nuts. I have used some force on the nuts to insert them into the plastic, and even if this was the answer, it seems like a poor requirement that will provide only a tiny amount of screw insertion.
Is it possible the the rubber sides should be facing towards the plastic instead?
Re: Step 17 Y-belt-idler bolts too short
I've had this problem also. The nuts are not seated deep enough. First look at the hole where the nut goes and look for any imperfections that is keeping the nut pushed up.
I took a longer bolt and threaded the nut and pulled/pushed it through. If it's not seating right you may have to carve some plastic.
DON'T CARVE OUT TOO MUCH, just the imperfections.
Re: Step 17 Y-belt-idler bolts too short
Thanks, I pushed harder and they went much further in.
This wouldn't have been an issue, but there are warnings about forcing the parts. I've worked with this stuff before, the manual writers and I should have known....
Re: Step 17 Y-belt-idler bolts too short
On this step we are dealing with printed parts, nyloc nuts, and bolts.
The instructions specify to have the rubber part of the nuts facing away from the printed plastic. I have done so, which means that the small non-hexagonal part of the nut is also facing away from the plastic.
When I try to assemble the roller bearing bolt or the bolts which attach the assembly to the frame, I simply can not get the bolts to catch on to the nuts. I have used some force on the nuts to insert them into the plastic, and even if this was the answer, it seems like a poor requirement that will provide only a tiny amount of screw insertion.
Is it possible the the rubber sides should be facing towards the plastic instead?
For the bolt that goes through the roller bearing, you can use a 20mm bolt to help pull the nut down into the hole and then replace it with the 18mm bolt. You do have make sure the hole is clean and not tighten too much or the part will break.
I replaced the two M3x10 bolts that are used to attach the idler/tighten the belt with two M3x16 bolts so that it was easier to install and tighten the belt.