◆ Soft plastic
Crappie grub lure mold, 1.5 inch
Twenty-four 1.5 inch curly tail grubs per pour for crappie, perch and panfish. A silicone lure mold you make yourself.
◆ Soft plastic
Twenty-four 1.5 inch curly tail grubs per pour for crappie, perch and panfish. A silicone lure mold you make yourself.
A hand-pour mold for twenty-four little curly tail grubs for panfish: a ringed 19 mm body, 6 mm across, with a flat tail about 25 mm long curled once round, about 1.5 inches of bait. They come in two sets of twelve; each set takes about 5 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 a twenty-four-cavity lure mold. Plastisol goes in at 160 to 180 C, which no printed mold survives, and the tiny tails peel out of silicone whole.
The grubs are open-pour and flat-backed, as every hand-pour mold makes them. Put one on a 1/32 to 1/16 oz jig head under a float, or tip it with a waxworm. The zip carries the printed caster exactly as the tool exported it, one set of twelve grubs 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 pink crappie grubs 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 232 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 grub from the pour cup in one steady stream, starting at the tip of the 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 grub 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) | 104 x 175 x 15 mm |
| Print bed needed | 175 x 105 mm, 16 mm tall |
| Filament | ~53 g |
| Layer height | 0.2 mm |
| Infill | 15% |
| Supports | Not needed |
| Download | ZIP: printed caster (STL) + one set of twelve crappie grubs (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.
A 1/32 or 1/16 oz round jig head with a size 6 to 2 hook, fished under a small float or counted down near cover. For ice fishing, the same grubs go on a 1/64 oz tungsten jig. Thread the body straight so the tail curls down.
Use a small pour cup with a narrow spout, or a squeeze bottle made for hot plastisol, and pour each grub in one movement from the tail tip to the head. Hot plastisol and a warm mold matter more with small baits than big ones.
Pink and white, chartreuse, black and chartreuse, and clear with silver glitter are the standbys. Two-tone grubs are easy: fill the tails in one colour, then the bodies in another straight after.
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