Formoteca

Electronics enclosure

Enter the size of your board and where its holes are. The case grows to fit: bosses for the screws, a gap all around, room for the parts, plus a lid, vents and an opening for a plug.

Calculated in your browser. Nothing is uploaded.

Board

Lengthmm

Widthmm

Screws On ledges

Screws: bosses with pilot holes under the holes of the board. On ledges: the board rests on its long edges – for boards without holes.

M2 M2.5 M3

The holes are pilot holes; the screw cuts its own thread. Raspberry Pi: M2.5, Arduino: M3.

Hole spacing (length)mm

Centre to centre. Raspberry Pi 4 and 5: 58 × 49 mm. 0 = only one row.

Hole spacing (width)mm

First hole from the leftmm

From the left edge of the board to the centre of the hole. Raspberry Pi: 3.5 mm.

First hole from the frontmm

From the front edge of the board to the centre of the hole.

Type a number and press Enter, or use the slider.

Case

Space below the boardmm

Height of the bosses or ledges. Solder joints underneath need about 3 mm.

Space above the boardmm

Height of the tallest part plus a little air.

Gap to the wallmm

Space between the board and the wall, all around.

Wall and floormm

2 mm = 5 lines with a 0.4 mm nozzle.

Corner radiusmm

Lid

Screwed Press-fit

Screwed: four M3 countersunk screws into corner posts. Press-fit: a rim under the lid holds it by friction.

Clearancemm

Gap around the rim. 0.2 mm fits snugly; if the lid is too tight, try 0.3 mm.

Openings

None Slots in the lid Slots in the sides

A cut-out in one wall, e.g. for USB or a cable.

Widthmm

Heightmm

Centre from board edgemm

Front and back: from the left edge of the board. Left and right: from the front edge.

Bottom above boardmm

From the top of the board to the bottom edge of the opening.

Download

Print the case with the opening up and the lid with its outer side down – no supports needed. The screws cut their own thread: turn them in slowly. For the screwed lid: M3 countersunk screws. 3MF keeps the parts apart and in millimetres. Every slicer opens 3MF and STL.