Pressure Pot Resin Casting Guide

A pressure pot can help reduce visible bubbles in suitable resin casting projects by compressing trapped air while the resin cures. This guide explains how pressure-pot casting fits into a small workshop setup and links to the casting supplies available from Nash Woodcrafts.

What is pressure-pot resin casting?

Pressure casting uses a suitable pressure vessel to apply pressure while resin cures. The pressure compresses bubbles so they are less visible in the finished casting. Always follow the instructions and operating limits supplied by the pressure-pot and resin manufacturers.

Choosing a casting mould

For pen blanks and other turning projects, choose a mould that suits the finished blank size and your preferred casting method. Nash Woodcrafts supplies both rigid HDPE and flexible silicone options.

Shop HDPE Casting Moulds
Shop Silicone Casting Moulds

Pressure pot caddies

A caddy helps organise compatible moulds inside a suitable pressure pot and makes it easier to load and remove casting projects.

Shop Pressure Pot Caddies

Resin and colour

Choose a resin suitable for your project and follow its stated mixing, curing and pressure guidance. Mica powder can be used to add colour and effects to many casting resins.

Shop Epoxy Resin
Shop Mica Powders

Before you start

Check that the pressure vessel, fittings, mould and resin are suitable for the intended process. Do not exceed the pressure-pot manufacturer's rated working pressure, and follow the resin manufacturer's safety, mixing and curing instructions.