Two parts to allow use of more of the standard simple print bed.

I have produced these in an attempt to recover an extra 50mm for the X-axis on a standard Printrbot Simple print bed. e.g. extend the X-axis from just under 100mm to just under 150mm.

Requires 2 x 300mm 8mm steel rods.

This does not include a belt conversion, or require a new print bed or other significant changes to the printer. It is intended to be step 1 in a plan to upgrade the print size over a number of steps (probably using other peoples designs for the future steps once the print bed is big enough to print them).

Depending on how the x-axis line was cut when the simple was put together, you may require some new line for the extension.

Updated: I ran into problems with the strength of the arms on the original one peice design as the layers ran the wrong way to produce strong arms. Have changed to a multi peice design.

My simple is now running with these fitted, with a x-axis setting of 138mm. I think if i adjust the end-stop slightly i may get 140mm out of it.

The plan is to remove the print bed from the existing rods (cutting cable ties) and replace the existing x-axis rods with new 300mm rods.

Then the existing print bed will be attached (using the existing screws, nuts and springs) to the parts included here.

The x-axis line would then be replaced with a new length, attached to the original tensioner (left hand side) and the line attachment screw (right hand side) which would be moved to the new parts.

Print:
1x x-right
1x x-left
2x lh-arm
2x rh-arm
1 x tensioner (if you dont want to use the original wooden one)
1 x tensioner clip (because the attach point is now thicker)

Glue the arms to the bars aligned with the edges or the marking line, so that the nut holes are on the bottom. A strong glue is required.