Quote Originally Posted by Ross77 View Post
Thats a shame, I didnt think you would have a problem this soon.
Is it binding because of the long distance of the y compared to the truck spacing or is it just the weight causing excesive friction? If its the former then it should disapear if you drive it with a screw on each side. (eliminate the racking) might be worth pursuing before for you make major changes.

For the rails I beleive Gary at Zapp sells the 15mm rails and 4 way loading trucks for the same as the Igus stuff you bought. £50-60 for 1m rail and £35 ish a truck. These also have way more capacity as well.
I have been playing with it today, i had one screw in each bearing block tightened up, one side of the frame loosened off so it would move but it is still binding and hard to move, i even tried adjusting the bearings but no joy.

I took the y axis frame off leaving the 2 plates on, and if u put any slight sidways pressure on the plate it locks the bearings up.

It could be due to the y axis being so big compared to the bearing spacing.

Hopefully work should be ordering the 20mm rails and carriages from zapp, they should be alot better due to having bearings, and they only work out to be about 40 quid more than the igus set.

Im going to try the igus rails on the y axis where everything should be more square and closer together.