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Half length Duplo compatible straight train track rails with internal printing support structure for easy printing without additional supporting materials. The SCAD-file allows you to make the vertical rail part somewhat thicker and stronger (extrawidth parameter) to more easily support a child standing on it. Smuk3D made an improved version which gives better results on printers with a higher resolution than my Mendel: http://www.thingiverse.com/thing:196137
Half length Duplo compatible straight train track rails
Order summary

Half length Duplo compatible straight train track rails
Color:
Quantity:
Subtotal
$
Delivery (May 04 - May 06)
Free
Total
$