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.*
5 mm And 3 mm LED Colour Sort Block
A 118 x 72 mm bench block with six colour lanes. Each lane has eight 5.4 mm wells for 5 mm (T-1¾) LEDs and eight 3.4 mm wells for 3 mm LEDs. You drop each LED in dome-first: the rim (about 5.8 mm and 3.9 mm) catches on the top face, so the legs stand up ready to grab, sorted by colour instead of tangled in a bag. At one end, a raised slot holds a CR2032 (20 x 3.2 mm) on edge with 6 mm sticking out, so you can pinch the LED legs across the cell for a quick colour and polarity check before soldering.
TO-92 Keyed Six-Bin Transistor Tray
A 131 x 73 x 24 mm tray with six 19.5 x 55 mm bins for loose TO-92 parts like the 2N2222, BC547 and 78L05. In front of each bin is a keyed D-shaped index socket (5.8 mm round, flat side forward, 5 mm deep) with a lead slot that drops into a hidden cavity. You park one sample part in the socket and can read its marking and pinout orientation at a glance. The socket has about 0.3–0.6 mm of slack so it fits TO-92 bodies from different manufacturers.