Thumbscrews nuts and bolts

Hello, this is my first post on Thingiverse, I hope I’m doing it the right way.

I’m no expert in 3D printing, I found two designs and combined them to turn the bolts into thumbscrews.

Original design:
https://www.thingiverse.com/thing:193647 by mike_mattala

Thumbscrew caps I used:
https://www.thingiverse.com/thing:1460364 by akira3dp0

I have no idea (yet) how to use the Customizer because I can’t make it work in my browser so I prepared a set of different sizes:

Nuts are:

12mm (outer)

6.9mm (inner)

Bolts are (screw part length):

16mm

26mm

36mm

46mm

I printed them on Monoprice Mini Delta with following settings:

Filament Type: PLA

Nozzle Temperature: 205°

Bed Temperature 60°

Infill: 30% (increase it to make them sturdier)

Optimize Wall Printing Order and Infill Travel Optimization in Cura settings (to avoid stringing)

I found out that Increasing the model scale in Cura by 3% I can get good measurement accuracy but of course that depends on each printer model/brand