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.*
4S2P 18650 Frame-Strap Battery Box
A low-profile open-top tub for a DIY 4S2P pack of eight 18650 cells (18.4 x 65 mm) laid in two layers of two, with an internal bay of 134 x 39 x 39 mm. The outside measures 144 x 44 x 45 mm. Two 22 x 3.2 mm strap tunnels run through the 6 mm floor so velcro straps hold it to a down tube or frame triangle. There's a 16 x 10 mm main-lead notch at one end, an 8 x 6 mm balance-lead notch at the other, and four M3 heat-set columns to screw on a flat lid. It's for an e-bike, scooter or robot pack you build yourself.
Flagged: battery or DC power. Not for safety-critical use without independent engineering review.
Bar Load Cell Riser Mount With Overload Stop
This is a cantilever base for the bar-type strain-gauge load cells used with HX711 boards. A 40 x 30 mm riser holds the fixed end 20 mm above a 110 x 50 mm plate. Its 5.5 mm slot, with a hex-nut track underneath, takes M4 or M5 bolts in a 15–26 mm pattern, so you don't need a matching bracket. Under the free end is an M4 heat-set overload-stop post: a screw in it sets the gap so a dropped weight can't over-bend the cell. The plate fixes down with four 4.5 mm (M4 / #8) holes.
18650 Four-Bay Screw-Contact Test Sled
A sled that holds four 18650 cells (18.4 x 65 mm) in 19 mm open-top troughs on a 24 mm pitch, so you can test, balance or capacity-check salvaged cells without spot-welding. Each end wall takes an M3 brass heat-set insert (4.0 mm bore) on the cell axis. An M3 screw threads in to clamp the cell and make contact, with 3 mm of travel at each end. Footprint 100 x 87 mm, 20 mm tall.
Flagged: battery or DC power. Not for safety-critical use without independent engineering review.
Pi 4 And Pi Zero Nut-Track Project Box
A 120 x 80 x 32 mm project box. Its 4.2 mm floor has four captured M3 nut tracks spaced for both the Raspberry Pi 4 (58 x 49 mm hole pattern) and the Pi Zero (58 x 23 mm), so you can bolt a board anywhere along the tracks. It has cable notches in both ends, vent slots in the side walls and four M3 heat-set insert bosses (4.0 mm bore, 8 mm deep) for screwing on a flat lid.
AA Screw Terminal Battery Holder
A four-cell AA holder (98 x 74 x 20 mm) with snap-in open-top channels on 18 mm pitch for 14.5 x 50.5 mm cells, so you can see and swap cells without a tool. Each cell end gets a contact window plus an M3 heat-set boss (4.0 mm bore) on top of the 9 mm end wall, so brass straps and ring-lug wires bolt down with M3 screws instead of being soldered to flimsy tabs; four corner ears take M3 clearance screws for chassis mounting.
Flagged: battery or DC power. Not for safety-critical use without independent engineering review.
Bench Heat-Set Insert Press
A fully printed bench press that holds any soldering iron barrel 12–22 mm dead vertical so M3/M4 brass heat-set inserts go into printed enclosures square instead of crooked — no arbor press, rods or donor hardware. The 90° vee carriage rides a print-in-place dovetail column (0.45 mm clearance) and is strapped to the iron with a rubber band or zip tie in the 7 mm retaining groove; the 80 x 73 mm base has two insert trays and four M4 clearance holes to bolt it down. Overall 80 x 73 x 105 mm.