Step 1: Close the upper and lower covers, use PETG consumable filament (PLA is not recommended due to its brittleness), rotate and push the filament into the hole on the side of the model to lock the upper and lower covers. Because the designed hole is slightly smaller than the consumable filament during modeling, the consumable filament can lock the upper cover firmly.
Step 2: Press a 4mm x 2mm magnet into the magnet hole of the main body without glue, then attach another magnet to the installed magnet, find the right angle, close the upper cover, and the other magnet can be firmly pressed into the hole.
Note: Since the actual size of the 4mm x 2mm magnet I bought is 4mm x 1.6mm, I modeled the magnet hole with a size of 4.05mm x 1.6mm. But don't worry, I have added a negative volume cylinder to the magnet hole in the slicing software. You only need to modify the size of the negative volume to get a hole that matches your magnet. Due to the slicing software algorithm, the model size changes start from its center point, so the diameter of the hole does not need to be calculated, but the height does. Assuming your magnet has a standard height of 2mm, you need to set the height of the negative volume to (2mm-1.6mm) x 2 + 1.6mm = 2.4mm, and so on!
假如您想买和我一样尺寸的磁铁,以下是淘宝链接:https://detail.tmall.com/item.htm?_u=17au44l266e&id=619016855032&spm=a1z09.2.0.0.57702e8doSod9X 请选取直径4mm x 厚2mm的选项。
Step 3: Since a certain amount of space needs to be reserved for the double-sided adhesive tape on the bottom, and precision is required, I used PLA as a support for PETG. This ensures a perfect flat surface and the support is easy to remove. With a scraper, you can easily remove the support by finding the right angle.
Note: Please control your strength to avoid scratching your fingers with the scraper.