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Replacement bottom guide for a bypass/sliding shower door: a 46 x 22 x 15 mm block that screws to the track with two countersunk M3 (#6) screws and carries the door's bottom glass edge in a 7.2 mm channel sized for 1/4 in (6.35 mm) glass. A V-shaped lead-in opens the channel to 12.7 mm at the rim so 5/16 in and 3/8 in glass still ride about 5 mm deep, and flared ends in plan view guide a drifting door back in; the counterbored screw holes also drain the channel.
Replacement wall-end bracket for a broken towel bar, with a stepped socket that takes both 1 in (25.4 mm) and 3/4 in (19 mm) tube — a 1 in bar bottoms on the step after 18 mm, a 3/4 in bar slides 28 mm deep — and an M4 set screw that locks it so you don't have to replace the whole rail set. Back plate is 42 x 68 x 6 mm with two counterbored 4.5 mm holes 52 mm apart for #8/M4 anchors, bar centre stands 38 mm off the wall, overall 55 mm tall.
A bench-top fume extractor housing for any 40 x 40 x 10 mm fan — the fan bolts to the 60°-tilted face on its standard 32 mm M3 pattern (3.4 mm clearance holes with counterbores so the heads sit flush), and a 42 mm square of activated-carbon filter sheet press-fits into the 41.5 x 41.5 x 4 mm pocket in front of a ribbed finger-guard throat. Footprint 52 x 64 mm, 50 mm tall, with two M4 holes in the weighted base for bolting it to the bench and an open rear duct so exhaust clears the work.
A 120 mm replacement flush lever arm for a toilet tank, for when the brittle OEM arm snaps at the chain hole and the linkage isn't sold separately. Instead of guessing your handle's tab shape, a 14 mm deep forked jaw slides over the handle blade (1.5–3.6 mm thick) and pinches it with an M3×20 screw and a captured M3 nut; five 4 mm chain holes on a 12 mm pitch set the flapper chain length. Arm cross-section is 5 × 12 mm so the bending load runs along the print's strong axis.
A bolt-clamped replacement slider/holder for a 25 mm shower riser bar, for when the molded plastic holder cracks and the maker only sells the whole $60 rail. A 38 mm split ring with 6.3 mm walls grips the bar via two M5x30 bolts with captured nut pockets, and a 10°-tilted tapered cradle (26.4 mm top, 22.8 mm bottom, open through the bottom so it drains) holds the hand shower. Overall 90 x 39 x 32 mm.
A clamp-on double hook that saddles the top edge of a frameless glass shower door — towel hook on the outside, loofah/razor hook on the inside, no drilling, adhesive or suction cup. The 13.6 mm slot with a raised grip pad takes 6–13 mm (1/4"–1/2") tempered glass, and an M4 heat-set insert (5.5 mm bore) plus an M4x16 screw locks it down; 76 x 43 x 26 mm.
A stackable closet-flange riser for when new tile or vinyl leaves the toilet flange below the finished floor and the wax ring won't seal. 164 mm OD ring with a 110 mm bore that clears a 4" DWV throat, obround bolt slots on the 139.7 mm (5.5") closet-bolt standard, four 4.5 mm screw holes for #8 anchors, and a 1.5 mm tongue/2.0 mm groove so rings interlock and stack in 6.4 mm (1/4") steps. Print in PETG or ABS at high infill and stack as many as the gap needs.
A standoff bridge that suspends a 40 mm fan directly over a Raspberry Pi 4B / 3B+, with a 32 mm shrouded duct collar aiming the air at the SoC instead of letting it spill sideways. 74 x 64 mm plate on four 18 mm legs that clear the USB/Ethernet stack, 58 x 49 mm M2.5 board pattern with captured nuts at the board end, 32 mm square M3 fan pattern, plus side exhaust vents and a 26 x 4.5 mm slot for GPIO ribbon or camera flex.
A 104 x 46 x 16 mm bench dock that stands up 6 microSD cards (11 x 15 x 1 mm), 3 full-size SD cards (24 x 32 x 2.1 mm) and 4 USB-A flash drives parked plug-down in 12.8 x 5.4 mm bays, so the loose media around a Pi/camera bench stops disappearing into the parts bin. Cards protrude 7–20 mm for a one-finger pinch, a scalloped thumb groove backs the microSD row, and two M3 clearance holes on a 96 mm centre let you screw it into a drawer bottom or shelf; underside relief pockets keep it to roughly 57 cm³.
A split collar that clamps onto a standard 1/2" NPT shower arm (21.3 mm OD pipe) with one M4 screw into a heat-set insert, carrying two 30 mm upturned J-hooks for a loofah, razor strap or bottle handle — no suction cups, no drilling tile. Collar bore is 21.8 mm, ring wall 3.5 mm, overall 60 x 38 x 18 mm; slide it on with the shower head removed, then pinch the 3 mm gap closed to lock it.
A 140 x 95 mm riser shelf that slides in around a bathroom sink drain so the dead space beside the P-trap becomes usable storage — the 52 mm wide U-slot (26 mm end radius) clears common 1-1/4 in and 1-1/2 in tubular tailpieces and their slip nuts. Four hollow 18 mm legs give 45 mm of clearance over the cabinet floor, 7 mm drain slots let a drip pass straight through instead of pooling under your bottles, and each foot has a 4.5 mm M4 clearance hole if you want to screw it down.
A six-lane stadium-step rack that sorts cut heat-shrink tubing by diameter — troughs 8/10/12/14/17/20 mm wide take the common 3:1 sizes from 2.4 mm up to 12.7 mm, each 74 mm long with a finger scallop so you can pinch a piece out without emptying the lane. 116 x 99 x 39 mm overall, open underneath to stay light, with two M4 clearance ears (4.5 mm) to screw it to a shelf or bench back.
A 28 mm tall tapered duct that lets a 60 mm fan feed an 80 mm fan opening (or vice versa): 80 x 80 mm flange with M4 clearance holes on the 71.5 mm pattern at the bottom, 60 x 60 mm face with four 3.4 mm self-tapping M4 bosses on the 50 mm pattern on top. The airway necks smoothly from 73 mm to 55 mm with a 2 mm wall, so it replaces a grinder/zip-tie bodge on amp racks, 3D-printer electronics bays and PC cases.
A screw-mounted holster that holds a hair dryer by its barrel in a 64 mm ring so the handle and cord hang clear of the counter. Plate is 62 x 62 mm with two 4.6 mm screw holes on 40 mm centers; the ring stands off the wall 36 mm.
A countertop vanity dispenser: a 61 mm tube that stacks standard cotton rounds with a full-height front slot so you can see the level and pull one out with a thumb, plus an attached 28 mm cup for cotton swabs. Footprint 98 x 66 mm, 82 mm tall.
A 100 mm wide wall rack that hangs four toothbrushes head-up in open keyhole slots so they drain and air-dry instead of sitting in a wet cup. Slots take handles from the top edge, and four screw holes mount it to drywall or tile.
A 147 mm staircase block that stands a 13-piece metric drill index upright, with bores from 1.5 mm to 7.5 mm rising left to right so the size order is obvious at a glance. Each step is taller than the last, so bit tips sit deep and shanks stay easy to grab.
A 100 x 72 mm bar-soap dish with a 3 mm sloped floor, five lengthwise ribs that keep the bar up out of the water, and a spout notch with a flat drip tongue that sends runoff into the sink instead of onto the counter.
A winding key that grips the flat tail of a toothpaste or ointment tube in a 3.2 mm slot; twist the finger-hole knobs to roll the tube up and push every last bit out. 96 mm long with a Ø7 mm hang hole in one knob.