USB tiny ISP box enclosure

thingiverse

Simple box, no glue or screw needed, just slide the board inside. Print it at a 45-degree angle, as shown in the screenshot, and add support underneath it - either partially or fully - to improve its rigidity. You may be able to print it with a large brim and no internal support in that position, but the contact area with the building surface will be very small. No support is needed inside. I found that infill was probably not necessary, although I used 2 perimeters and 100% lines for infill myself. Two models are available: one with text labels for VCC & GND, and one without. PETG worked exceptionally well for me. A 0.3mm nozzle is a good choice (this model is quite small), with a wall thickness of 1.2mm. For a 0.3mm nozzle, I recommend an external perimeter of 0.25mm (for precise printing) and internal perimeters & infill at 0.65mm (for strong layer bonding). A 0.4mm nozzle should also work well.