Wiring pencil

A wiring pencil for electronic projects and prototyping.
*The pencil has a tray to fit the most common spools, and two sets of holes to put an axle through at different heights.
*The cover can be glued on, or fixed to the main part with tape.
*Sometimes it will be necessary to drill a 0,75mm to 1mm hole through the tip, if it didnot come out as planned.
*The Wheel is made to fit tightly and will have to be filled down a bit to work propperly, or have insulation tape etc. added.

I plan to ad an adapter for injection needles, since i know that many people have made wiring pencils with injection needles instead of a pencil like tip.
I will also try to design a fitting push mechanism instead of the wheel, for people who prefer that instead of the wheel.

Edit: I added an adapter for Needles with 4mm coupling