Sharpening / honing guide for chisels and planes

A honing guide with set 25 and 30 degree angles designed for use with chisels and plane irons. 

I made this because I'm hopeless at sharpening by hand and if I use the rolling standard honing guides they rust and damage the water stone. In this design there are simple cylindrical guide rails to move the upper section backwards and forwards over the stone and a flat plate designed to fit into 25 or 30 degree slots for holding purposes. Surprisingly I have been beating this thing up and it seems perfectly fine.

The length and width of the bottom cavity to hold a stone is 186 by 67 mm.

Recommended to print bottom and top section in ABS for durability and a bit of flex and the plate in PLA for rigidity. I'm not happy with the overhangs on the slots so if anyone comes up with a better solution than the supports in my print profile please let me know.