◆ Soft plastic
Creature bait lure mold, 3.5 inch
Eight 3.5 inch creature baits per pour, a ribbed body, two arms and a forked flapper tail. A silicone lure mold.
◆ Soft plastic
Eight 3.5 inch creature baits per pour, a ribbed body, two arms and a forked flapper tail. A silicone lure mold.
A hand-pour mold for eight 3.5 inch (88 mm) creature baits: a ribbed body that tapers to a rounded head, two short arms behind it and a wide, forked flapper tail that thumps on the fall, the compact bait for flipping and punching cover. Each set of four takes about 21 ml of plastisol.
Made with our tray mold generator in its flexible silicone tray mode: print the caster, pour a heat-rated mold silicone into it and peel out an eight-cavity lure mold. Plastisol goes in at 160 to 180 C, which no printed mold survives, and the flappers peel out of silicone whole.
The baits are open-pour and flat-backed, as every hand-pour mold makes them. Texas rig one on a 4/0 straight-shank flipping hook, or put it on a jig as a trailer. The zip carries the printed caster exactly as the tool exported it, one set of four baits as an STL, the master uploaded to the tool, and a print and pour sheet with the silicone figure the tool measured.
Shown as a 3D render of the printed caster with the silicone mold it makes and black and blue creature baits in front, not a photo.
Print the caster as exported, open side up, no supports. It only ever holds silicone, never hot plastisol: PLA softens at about 60 C.
Mix 386 ml of a mold silicone rated for 200 C (400 F) or more (most tin- and platinum-cure mold silicones are, check the datasheet) and pour it into one corner of the caster in a thin stream until it covers the shapes to the rim. Tap out the bubbles and let it cure for as long as its datasheet says.
Peel the cured silicone out of the caster. That silicone is your lure mold: lay it flat on a heat-proof board.
Heat soft plastisol in a microwave you keep for plastisol only, in 30 to 60 second bursts, stirring between them, until it is clear and runny at 160 to 180 C (320 to 350 F). Stir in colour, glitter or salt now. Work with a window open or under an extractor and wear gloves: hot plastisol burns, and it smokes if it goes past 190 C.
Pour each creature bait from the pour cup in one steady stream, starting at the forked tail, which cools first, and fill each cavity slightly over the rim. Never pour lead or any metal into this mold.
Let the mold cool for 5 to 10 minutes, then peel each creature bait out, the thin end first. Trim any flash off the flat back with scissors, and keep the mold for plastisol only.
Print details
| Cast material | Soft plastic |
|---|---|
| Printed parts | 1 |
| Size (W x D x H) | 196 x 140 x 20 mm |
| Print bed needed | 197 x 140 mm, 21 mm tall |
| Filament | ~101 g |
| Layer height | 0.2 mm |
| Infill | 15% |
| Supports | Not needed |
| Download | ZIP: printed caster (STL) + one set of four creature baits (STL) + tool master (STL) + print and pour sheet |
| Added | 2026-09-28 |
Made with the free Tray mold generator. Upload your own model and get the same kind of mold built around it, in your browser.
Free, no account needed. Opens Thingiverse in a new tab.
Free for personal use. Selling the pieces you cast needs a commercial licence (Pro or Founder); passing on the file itself is not permitted on any plan. Full terms.
New to casting? Read the ice cube tray mold guide.
Flip or pitch it into weed, wood and docks on a 4/0 straight-shank hook with a pegged 3/8 to 1 oz tungsten weight and let it fall; the flappers thump on the way down. It also makes a bulky trailer on a flipping jig.
Pour it in a soft plastisol with no salt, and it rests on the bottom with the tail flapping up. For a faster fall through thick cover, add fine salt instead, about a teaspoon per 100 ml.
A good heat-rated silicone takes many dozens of pours. Heat ages it slowly: let the mold cool between rounds, keep the plastisol below 190 C and never let it smoke, and the cavities stay glossy for a long time.
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