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  1. #11
    Sorry you posted at the same time, (I thought the SBR was the carriage, didn't realize it had a different rail as well) That will work but remember you need two rails with supported rails as there is no rotational Resistance to them. do 2 rails and carrages equal 1 hiwin for cost?

  2. #12
    do 2 rails and carrages equal 1 hiwin for cost?
    I will do a calculation to see which is the lightest ( and also the cheapest!)
    This is a quick model of the Gantry I have knocked up with the SBR16 mounted on two 30 x 60 Extrusions
    Looks promising!

    Click image for larger version. 

Name:	Gantry.jpg 
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ID:	2452

    Andy

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