I have moved the ballscrew to the front of the gantry and will be using 20mm ali instead of steel plate, too costly. Have added some steel angle to corners to connect gantry to end plates.Click image for larger version. 

Name:	final with box section and corner plates front corner.jpg 
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ID:	6533Click image for larger version. 

Name:	final with box section and corner plates front.jpg 
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ID:	6534