GENERAL INFO

I separated into 2 version:

FANCY → https://www.printables.com/it/model/580045

Custom color accent ring and spinning end cap

SIMPLE (This)

In this alternative version the screwdriver body is a single color (You can still do color swap. Nobody can stop that…) and the cap is fixed so it's simpler to print.

ACCESSORIES

Bit with strong magnet → https://www.printables.com/model/583289

Case that holds 2 bitholder. → https://www.printables.com/model/580067

HOW TO PRINT

Please use 0.4 nozzle.

Print everything using PETG. The bit holder, body and cap need 2 shells and print slow for maximum layer adhesion.

I recommend 2 shell because from my testing PETG is finicky and different brand will flow differently so if you keep 2 shell and 15-20% infill the printed part remain a bit elastic.

Except the top part of the screwdriver. Here please use at least 5 wall or more. Use a cylinder modifier.

WARNING: You may need a brim if your bed adhesion is not good.

No support required except for the spinner cap where you do need support. Every other piece is designed in such a way that the max overhang is 45° or less steep.

Kapton tape is needed on the bit holder piece. 3-4 layers between the cap and bit holder. 2-3 layers between the bit holders and the main body. (May differ between printers) The tape is a little bit compressible so it makes a very good fit and it’s smooth so it reduces the noise and makes it sound better. Without it when sliding the bit holder because of the orientation of the layers the plastic sliding on plastic makes a loud screeching noise.

I uploaded an already sliced example .3mf from Bambu Studio. If unsure check it.

WHAT YOU NEED

• PETG filament.
• A few meters of Kapton tape
• A bit extender. Search on Amazon or AliExpress “bit extender” and a truckload will appear.
• (Optional) 608 bearing if you want the spinning cap

Total BOM cost: 2-5$ for an entire screwdriver (Bits excluded)

Here's an example of a search “Bit extender”

HOW TO ASSEMBLY

After you print all 3 pieces and have put Kapton tape in the correct areas, start by pushing the bit extender into the main body. Use your full body weight to push it fully in. (Use a wooden board or something idk figure it out)

After that push the bit holder into the cap.

If you want the bit holder with spinning cap, push the bit holder into the bearing and then push the bearing into the cap.

Then put all 12 bits into the bit holder (Optional).

Now your bit holder assembly is ready. Build as many as you need.

To insert the bit holder into the main body, use your fingers to compress the springs and push the bit holder into the screwdriver body. About ⅓ in. After that to lock it, rotate it counter clockwise until a loud click is heard. Depending at which position you inserted it you may hear a less loud false click. Simply rotate until a very loud click is heard.

A correctly inserted bit holder will not be able to be pulled off. (Unless you unlock it)

You can rotate it counter clockwise indefinitely. It will simply switch between locked and unlocked state.

CHANGE BIT HOLDER

To remove the bit holder pull as far as you can, grip firmly and rotate counter clockwise until it clicks (not very loud click) and then pull again and it will come out.

REMOVE THE BIT EXTENDER

To remove the bit extender, firstly remove the bit holder. Then take a long rod with diameter of not more than 5 mm and insert into the hole that you will see inside the main body. Push very very hard and the bit extender will pop out.