Wanhao Di3 Idler slider for button head M5s

Remix of the slider from Scraty's Wanhao Di3 V2.1 Y-Brace&Belt-Tensioner to use button head M5s. Metric countersunk screws can be hard to find in America. I made the sides a bit thicker (leaving 11mm in between for the idler pulley) to accommodate button head screws with heads of up to 3mm tall.

The 20mm button head M5s I had were too long for the slider, but M5x16 works okay for me. The 16mm screws don't extend to edge of the far side, but there should be plenty of material to hold it and th