Heads up: many models on this page are AI-generated or uploaded untested. They may be misconfigured for the intended application — check the dimensions and tolerances, and verify or edit the model before printing or relying on it.*
Self-Latching Sprung Hutch Door Catch
A print-in-place spring catch for rabbit hutches, chicken coops and cabinet doors. It screws to the frame with four #6 wood screws or M4 screws (4.5 mm holes). The angled tongue gets pushed in as the door swings shut and springs back out to lock it, and a thumb tab pulls it back to open. The body is 67 x 42 x 10 mm, the tongue reaches 14 mm past the body, and every moving face has 0.5 mm clearance.
Flex-Bow Cabinet Door Bumper
A screw-on cabinet door bumper with a flexing elliptical spring bow. The bow absorbs a slammed door, and a built-in hard stop limits travel to about 3 mm. The mounting bar is 46 x 6 x 18 mm and fits #6 or #8 wood screws (4.5 mm clearance holes, 8.5 mm counterbores) on 33 mm centres. The bow stands 11 mm proud of the face frame.
Spring-Loaded Toilet Paper Spindle
A one-piece replacement spring roller for a wall toilet paper holder: a 22 x 22 mm square spindle (31 mm across the diagonal, so it spins freely inside a 44 mm cardboard core) with a monolithic serpentine flexure instead of a steel coil spring. It is 157 mm long at rest and compresses 10 mm to 147 mm, so it drops into holders with bracket recesses 147-156 mm apart; the 12 mm diamond end nubs self-centre in round or square recesses and print with no overhang past 45 degrees.
8 mm Shaft Spiral Return Spring
A printed spiral torsion spring that returns an 8 mm shaft to its home position — the hub slip-fits an 8 mm rod (8.3 mm bore) and locks with an M3 set screw in a collar that sits 6 mm above the coils, while a 3-turn, 2.6 mm x 12 mm band winds out to a bolt pad with two M4 clearance holes on 16 mm centres. Overall 82 x 61 x 18 mm; good for flap/lever/pedal returns and damper hinges where a wound steel spring is a pain to source.
Bow Spring Mouse Cable Bungee
A wired-mouse cable bungee whose compliance comes from a printed bow spring: a 2.4 mm x 12 mm leaf arch bends in the XY plane (along the layer lines, not across them) so the 50 mm guide post springs fore-and-aft and keeps drag off the mouse. The 62 x 30 x 5 mm foot sticks down with a VHB square (the spring rides 1 mm clear of the desk) or bolts down through two 4.5 mm M4 clearance holes; the cable snaps into a 6.4 mm trough 43 mm up through a 4.4 mm pinch and still slides freely. Overall 62 x 73 x 50 mm, about 22 cm3 of plastic.