Here are some theoretical numbers I have crunched and posted a while ago in the frames section. Maybe this will be helpful to you.
Re: MakerSlide, Max Usable Lengths
Postby Patrick34 » Thu Feb 09, 2012 10:39 pm
So, anyway, back to the original question...
MakerSlide Deflection: How long is the MakerSlide usable at length unsupported?
I did some theoretical analysis using Solidworks COSMOSWorks on the MakerSlide up to 2000mm in length @ 5#, 2#, and 1# loads in the center of a beam with unfixed ends (worst case). Here are the results:
Length (mm), Deflection (mm) @ 5lb
Length (mm), Deflection (mm) @ 2lb
Length (mm), Deflection (mm) @ 1lb
Sorry for the mixed English(IPS) and Metric values. It was just what I happened to enter in the analysis program because I estimated the weight of the gantry to be no more than 5lb, and didn't feel like dealing with the decimal equivalent in Newtons. The unit conversions were taken into account in the calculations by the software.
Basically what this means is that the MakerSlide should not deflect more than 1mm when 5lb is in the center of a rail up to 2000mm in length.
This calculation actually would be useful for a gantry weight of up to 10lb because during by setup of the problem I had forgotten the fact that the axis requires two rails (one at each end of the gantry).
I would like to know how close these numbers are to reality.
**IMPORTANT** These values are calculated for the MakerSlide standing on edge NOT flat.**
If this is accurate, these numbers could be useful to those using the MakerSlide in other design situations.
Please add to this info as possible.
"Measure twice, cut once."