Tomato 45 deg grafting jig - max 3 mm stem dia - using razor blade

thingiverse

This jig makes it easy to carve out 45-degree angles for successful grafting. The maximum stem diameter that this tool can handle is a slim 3 millimeters.\r\n\r\nBeginner grafters: it's essential to get the two parts of the graft lined up at the same angle - but don't worry if you're not working with 45-degree cuts, you'll still be okay as long as you make precise matches between both halves.