I bought one of the 3D printed kits from Ebay. It just needs some 25mm x 25mm stripwood and eight woodscrews.    I carefully cut the stripwood, 4 pieces, to the length I wanted. All good  and I used some dark mahogany wood stain I had in the garage. There was a little bit of a wobble so I unscrewed the screws slightly and pressed on two corners to try to straighten it out. CRACK!     B*gger. After calming down, I used the remainder of the wood to replace the broken