How to Make Molds for Fishing Weights

How to Make Molds for Fishing Weights

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A fishing weight is made of lead and is used to weigh down the bait on your fishing line. This increases your control of the lure and allows you to fish at a greater depth, making your bait more effective. You can make weights in different shapes and sizes by pouring melted lead into weight molds. To make weights, you should have several molds to accommodate the different weights you’ll need.

Items you will need

  • Large potato

  • Knife

  • Paring knife

  • Fishing weight

  • Wooden block

  • Saw

  • Power drill

  • Drill bits

  • Chisel

Potato Mold

Choose a large potato with a thick middle section. Look for one with a uniform shape, rather than one with irregular angles. Cut the potato in half with a knife to make two deep, short sections rather than long, flat ones.

Use a paring knife to carefully carve out the shape of the weight you want to make. If you are making a weight that is narrower on one end, make the narrow end in the lower, inside part of the potato and the wider part at the open, cut end.

Get an existing fishing weight that you have and fit it in the shape you are making the mold. Try several times until you have carved out the potato so the weight fits in perfectly.

Wooden Mold

Cut a block of wood with a saw so it is a bit larger than the size of the weight you want to make.

Drill into the top of the block using a power drill to break the surface into an opening Make the opening as wide as the wider end of the weight.

Use a smaller bit to continue to carve out the rough shape of the weight until you have the basic shape of the weight.

Take a small chisel to the inside of the block to make the mold more defined. Use an existing fishing weight that you have as a reference for the right shape.


  • Replace your molds after every several lead pourings because the materials will start to break down; broken down molds will produce sub-par weights.


  • You can use both halves of the potato and make two different shaped molds.