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.*
Dual-Spacing 450 Ω Ladder Line Spacer Sprue
A sprue of six snap-on spacers for homemade open-wire ladder line. Each spacer has two pairs of side-entry wire seats: 34.8 mm apart for about 450 Ω with 14 AWG (1.63 mm) bare copper, and 43.8 mm apart for 12 AWG (2.05 mm). The 2.4 mm seats sit behind 1.7 mm entry slots, so you can press spacers onto wire that is already strung instead of threading them on beforehand. The sprue measures 64 x 80 x 5 mm, and each spacer snaps off its tabs. For a line that lives outside, print it in PETG or ASA.
PL-259 And BNC Double V-Jaw Coax Wrench
This is a flat 153 mm double-ended wrench with a 60° V-jaw at each end. The large jaw is 28 mm wide at the mouth and wedges round or hex coupling nuts from about 10 to 26 mm, which covers PL-259/SO-239 and N connectors. The small jaw is 16 mm wide and takes about 5–14 mm, for BNC, SMA and F connectors. Because the V grips by wedging, no exact nut size is needed. You can snug and loosen coax at an antenna or radio without crushing the knurl with pliers. It prints flat, 8 mm thick, so the turning load runs along the layers, and it has a 5.5 mm hole for hanging it on a peg.
Ferrite Toroid Five-Size Stacking Rack
A 142 x 46 mm bench rack with five pegs, one per common toroid size: FT-37 (9.5 mm OD), FT-50 (12.7 mm), FT-82 (21 mm), FT-114 (29 mm) and FT-140 (35.6 mm). Cores stack up to 36 mm high on each peg, and every peg sits in a shallow well 2 mm wider than its core, so you can grab the size you want without digging through a loose drawer.
SDR Dongle Upright Antenna Stand
A weighted 90 mm base with a 55 mm tall sleeve that holds a USB SDR dongle (anything up to 32 x 17 mm in section) upright, so a telescopic whip on the MCX/SMA end can't pull it over. The USB extension cable's socket sits on the desk inside the open-bottom sleeve and leaves through an underside trench. An M3 heat-set insert takes a nylon thumbscrew that clamps thinner dongles. Three 4.5 mm holes let you screw the base to a shelf.
HT Radio And Speaker-Mic Belt-Clip Dock
This desk dock is 140 x 80 mm and has two upright tongues. Your handheld radio and its speaker-mic hang on them by their own spring belt clips, so the dock doesn't depend on any one radio body size. The radio tongue is 4 mm thick (60 to 44 mm wide, 61 mm tall). The mic tongue is 3 mm thick (36 to 28 mm wide, 46 mm tall). Both have a lead-in at the top. A rear notch routes the mic cord, and four 4.5 mm holes let you screw the dock to a shelf or desk with M4 or #8 screws.
Flexure Sideswiper CW Morse Key
This is a one-piece single-lever sideswiper ("cootie") Morse key for ham radio. The key lever swings on a 1.8 mm printed flexure blade that bends sideways in the XY plane, so no bearings or springs are needed. Two contact posts take M3 brass heat-set inserts (4.0 mm bore) on a horizontal axis. M3 contact screws with lock nuts set the gap to an M3 screw and nut pair through the lever's 3.4 mm hole. A third M3 insert at the back is the common terminal. The 110 x 70 mm base has two 40 x 18 x 5 mm pockets that you fill with washers or lead shot for weight. Put 2 mm stick-on rubber feet under the base so the lever clears the desk.
Universal Toroid Winding Cradle
A bench cradle with a tapered double-V pocket. It holds a toroid or ferrite core upright while you wind it. The pocket narrows from 18 mm at the top to 3 mm at the floor, so it wedges cores about 3–18 mm thick, and the 36° end ramps centre any OD from a T-50 (12.7 mm) up to an FT-240 (61 mm). The winding hole stays clear above the 28 mm tall jaws. It also has a 1.5 mm slit to hold the wire tail, and the 110 x 50 mm base takes two M4 or #8 screws through 4.5 mm holes on a 94 mm pitch.
Wire Dipole Antenna Center Insulator
Centre insulator for a wire dipole or inverted-V: a 140 x 76 mm ribbed plate with a wrap-post cleat on each leg (3.8 mm entry/exit holes for #14 AWG THHN at ~3.4 mm OD, around a 7 mm post) so the antenna tension is carried by the plastic instead of the solder joint. The 42 mm coax tail has three zip-tie stations (3.0 x 5.5 mm slot pairs on 18 mm centres) that strain-relieve RG-58, RG-8X or RG-213, and the top tab carries an 8.4 mm rope eye plus two M4 clearance holes (4.5 mm) for bolting to a mast plate.
PowerPole Dual Panel Bulkhead Plate
A 78 x 44 x 4 mm bulkhead plate that fixes two Anderson PowerPole PP15/30/45 connector pairs through a go-box, battery-box or van panel — each pair slides into a 16.4 x 13.2 mm collar 22 mm deep, seats against a rear shoulder, and is locked by an M3 grub screw in a brass heat-set insert (4.0 mm bore), so it holds regardless of housing length. Four 4.5 mm M4 clearance holes at 64 x 30 mm mount it behind the panel, twin 3 x 14 mm zip-tie slots take the cable strain, and the 16.4 x 9 mm rear window leaves both contact cavities open for loading crimped contacts from behind.