This is my old work. I decided to share this too
Everyday I needed to drill perpendicularly what I did not do well :(
So I did it
Material: beech plank 20 mm (preferably any other material, such as polyamide nylon), iron pad 5 mm and a spray of 6 mm diameter
I will share the drawings but perhaps these measures do not work, the other drill might need another size :(
Step 1: Dimensions and Drawings
It should be measured by the details of which is attached to the item.
Then create a drawing whose internal diameter should be equal to the measured drill's detail
In my case, 51 mm ...
Step 2: Making
Step 3: Result
It's a simple thing but I've helped :)