Overview
A latch in two halves. The female screws onto one thing (a box, a shelf, a panel). The male screws onto whatever you want to lock to it (a lid, a drawer front, a tray). The male has four round posts. Push the plates together and the posts snap in and hold on.
Push to lock. To open it, press the plunger on the bottom edge of the female and lift the male straight off.
Inside the female, an H-shaped frame slides a few millimetres. Each post goes through a keyhole in that frame. One printed spring holds the frame locked, and one plunger releases all four posts together.
STL Files are available for download for free. Printed on a Bambu A1 Mini in PLA, 0.4 mm nozzle, 0.2 mm layers. Results may vary depending on your printer settings and accuracy. If fitment is a problem, please adjust printer settings or part scale until you find your desired tolerances.
Facts
Plate size: 70 × 66 mm (2.76 × 2.60 in), both halves
Closed stack height: 25.2 mm (0.99 in)
4 posts, 1 release plunger
Plunger travel: 3.4 mm (0.13 in)
Printed in PLA, no extra parts, mounting screws only
Build List:
From Printer:
1 - Female plate
1 - Male plate
1 - Frame (spring and plunger fused)
1 - Back plate (optional)
4 - Post (print on its side, layers along the neck, 4 wall layers, tree support under the head only)
Hardware or Non-Printed Parts:
8 - Countersunk flat-head screws for the 4.5 mm mounting holes with a 9 mm countersink (#8 or M4). The four for the female need to be about 1.2 mm longer than the male ones because of the back plate. Length = plate thickness + roughly 6 mm into the surface.
Note: This is a prototype. I only load tested it once: it broke at 85 lb hanging 2 in out from the plates, so that’s the absolute max. It’s not a safety rating, and I haven’t tested cycle life. Don’t use it anywhere a drop could hurt someone.
Load by distance from the mount
I tested it once: it broke at 85 lb hanging 2 in out. The other numbers are calculated from that (170 lb-in divided by the distance), not tested. These are failure loads, not safe loads, so stay well below them.
2 in out: 85 lb (tested)
3 in out: about 57 lb
4 in out: about 43 lb
6 in out: about 28 lb
8 in out: about 21 lb
Filament
Printing it yourself? Use code EE7RXKZV at Amazon checkout for 10% off ByeHassle PLA.
Affiliate link, I get a small commission at no extra cost to you.
Overview
A latch in two halves. The female screws onto one thing (a box, a shelf, a panel). The male screws onto whatever you want to lock to it (a lid, a drawer front, a tray). The male has four round posts. Push the plates together and the posts snap in and hold on.
Push to lock. To open it, press the plunger on the bottom edge of the female and lift the male straight off.
Inside the female, an H-shaped frame slides a few millimetres. Each post goes through a keyhole in that frame. One printed spring holds the frame locked, and one plunger releases all four posts together.
STL Files are available for download for free. Printed on a Bambu A1 Mini in PLA, 0.4 mm nozzle, 0.2 mm layers. Results may vary depending on your printer settings and accuracy. If fitment is a problem, please adjust printer settings or part scale until you find your desired tolerances.
Facts
Plate size: 70 × 66 mm (2.76 × 2.60 in), both halves
Closed stack height: 25.2 mm (0.99 in)
4 posts, 1 release plunger
Plunger travel: 3.4 mm (0.13 in)
Printed in PLA, no extra parts, mounting screws only
Build List:
From Printer:
1 - Female plate
1 - Male plate
1 - Frame (spring and plunger fused)
1 - Back plate (optional)
4 - Post (print on its side, layers along the neck, 4 wall layers, tree support under the head only)
Hardware or Non-Printed Parts:
8 - Countersunk flat-head screws for the 4.5 mm mounting holes with a 9 mm countersink (#8 or M4). The four for the female need to be about 1.2 mm longer than the male ones because of the back plate. Length = plate thickness + roughly 6 mm into the surface.
Note: This is a prototype. I only load tested it once: it broke at 85 lb hanging 2 in out from the plates, so that’s the absolute max. It’s not a safety rating, and I haven’t tested cycle life. Don’t use it anywhere a drop could hurt someone.
Load by distance from the mount
I tested it once: it broke at 85 lb hanging 2 in out. The other numbers are calculated from that (170 lb-in divided by the distance), not tested. These are failure loads, not safe loads, so stay well below them.
2 in out: 85 lb (tested)
3 in out: about 57 lb
4 in out: about 43 lb
6 in out: about 28 lb
8 in out: about 21 lb
Filament
Printing it yourself? Use code EE7RXKZV at Amazon checkout for 10% off ByeHassle PLA.
Affiliate link, I get a small commission at no extra cost to you.
