Stell frame cnc 1500X1000. Adjustable table your opinion please

[ba99297]

Hi
As I have told I had my gantry milled on a 6 meter planer
The result wasn’t perfect so I had to shim the rails(at some spots) in order to be straight( no light pass) against straight edge.
I had the last three days trying to shim the rails and I think that the result is acceptable
After shimming I try to attach the y axis steel plate (that moves left right)
My question is how tight should be moved. I know that the hiwin carriages have some preload in order to be more accurate.
I made some tests
I use a zero flat ( from surface grinder) steel plate that will be used for my x axis.
I connect to this plate two carriages and put it on the y axis rails
By using a kitchen scale I measure 700gr force for the plate to move
I did the same with the y axis plate( that has been milled in a mill and it is nearly 3 times havier). It needs 2,7 kgr force to move it.
I made a video that show the two plates
First I move the x axis plate (that will be used in x axis), and then the y axis plate
I would like to ask if what you see and what you hear is normal for hiwin carriages
Also if there is any suggestion for grease for the hiwin carriages

P.S amplify your headspeakers
Here is the video

https://youtu.be/yQ5P9gRsEY0


Thanks for your time
Vagelis