Your enclosure cable sealing rings 3/4/5cm, these plugs cover cable pass-through holes, allowing power cord plugs to pass through, a must-have for enclosures

The mobile app can print directly, no supports needed

30mm for the A1 power cable (cloverleaf plug passes through)

40mm for the A1 mini power cable (plug passes through)

Any cable within 8.5mm is fine

Explanations are added below in chronological order

2025/12/29

Some friends requested a solid stopper, and the print profile has now been uploaded

For mobile printing, you can select and print the parts you need

For the PC version, keep what you want to print and remove others from the build plate

2025/11/24

The print profiles have been sorted, the latest (recommended v2.1) adds a 15mm thin thread, and there are three thicknesses in the profile, including those from (v2.0). The only thing to note is that the outer diameter of the 50mm head in (recommended v2.1) has been thinned. In the (v2.0) released a few days ago, the head was not reduced and had no thin threads

A new print profile (recommended v2.1) has been uploaded. The 50mm version has been lightened, with a reduced outer ring and thickness, making it lighter and easier to use

The thin one is very light and can clip onto a cardboard box

2025/11/18

The latest print profile (v2.0) has been uploaded, strictly designed according to dimensions. The 30mm diameter is 29.8mm, so a 30mm hole can pass directly through. By analogy, 40mm is 39.8mm, and 50mm is 49.8mm

The following issues have also been improved

And there are two thicknesses, one with a maximum of 3cm and one with a maximum of 5cm, the thinnest 1mm can be screwed all the way down

The 50mm version has three thicknesses: 1.5cm (your board's maximum thickness 0.7cm), 3cm (your board's maximum thickness 2cm), 5cm (your board's maximum thickness 4cm)

If you need thin versions for the other two sizes, please leave a comment, and I will make thin versions for 30 and 40 as well

The nut base has also changed from round to wavy, making it easier to turn by hand

For different diameters, you can select and scale, scaling to two decimal places. Only enlargement is recommended, avoid reducing by more than 10%, as making the central hole too small may prevent wires from passing through

Here is an example

Below is a table of different scale calculations

The red ones are recommended scaling ratios, you can calculate the scaling yourself

2025/06/08

————————The following are old instructions————————

PP board or acrylic with a diameter slightly larger than 42mm is needed. Using a 42mm trimmer will still require further grinding with a trimming knife

Comments say the cloverleaf plug of the power supply can be pulled out, so a 30mm one can be used

The diameter of the hole needs to be 1~2mm larger than the 42mm longest diameter of the model to pass through, because the longest diameter of the thread should be 43mm. A 42mm hole punch might create burrs that cut hands, and using a trimmer to deburr will enlarge the hole

• If you need exactly 42mm, you can scale to 98%

• If you need 45mm, you can scale to 105%

Some friends in the comments have reported this situation: a hole punched with a 42mm punch cannot be directly inserted because the maximum diameter of the thread is 43mm and the minimum diameter is 39mm. The punched hole may also have burrs that cut hands; it would be better to trim it with the deburring tool shown below, which is a useful little tool costing only a few dollars

————————The above are old instructions————————

——————The following instructions are general——————

Advantages: locating pin, chamfer for cable protection, smooth rotation, toothed edge for easy turning, not easy to fall off, no supports needed.

In addition, chamfers are made to protect the cables

And it rotates very smoothly