Caprolactone Thermoplastic


3.00 USD
$3.00 ea.

Caprolactone Thermoplastic - tongue-twisting mouthful of chemicalness. But this stuff is cool! You have to heat it up to work with it. Paradoxically, it still very cool, believe me.

Description [Hide]

Caprolactone Thermoplastic (also commonly called ShapeLock, Friendly Plastic, Instamorph or Polymorph) is a biodegradable polyester plastic with a low melting point of around 60°C. When solid it has physical properties of a very tough, nylon-like plastic, but it will melt into a putty-like consistency at only 60°C. It's specific heat and conductivity are low enough that it is not hard to handle at this temperature. This makes it ideal for small-scale modeling, part fabrication, repair of plastic objects, and rapid prototyping where heat resistance is not needed. Though molten caprolactone readily sticks to many other plastics, if the surface is cooled, the stickiness can be minimized while still leaving the mass pliable.


An easy way that we recommend to shape this Thermoplastic is to heat up some water close to boiling and toss the granules in. When they become close to clear in color fish them out (NOT WITH YOUR FINGERS!!!) with a spoon or other such sacrificial item. Wait a little until they cool down a bit and then start shaping it all with your hands (maybe use some gloves if it's too hot). If you'd like to re-shape it, just toss the plastic in the water and try again!


  •     Reusable - just reheat and remold, endlessly recycle-able
  •     Super tough, safe and non-toxic
  •     Machine-able - easy to saw, drill, tap and mill
  •     Excellent material for custom parts, brackets, forms and molds
  •     Low melting point of 60°C


  •     Handle replacement for broken tools
  •     Making brackets and plastic sheets
  •     Robotic fingers and scorpion tails
  •     Robot joints, legs, and servo mounts
  •     Mold making for low temperature materials, e.g. custom ice cube trays!
  •     Your imagination is the limit!


  •     1 x 50g ziploc bag of granules

Note: Please read safety instructions (Documentation tab) before using this material.

Documentation [Hide]

You Might Also Like [Hide]

3mm Sintra


This 8x12" 3mm thick expanded PVC sheet is available in multiple colours, and is excellent for building robot frames and shells

$3.25 USD

Breadboard Jumper Wire Bundle


This 70-piece flexible wire jumper kit is sure to replace your old-style solid-wire jumpers. These are more flexible, robust, and easy to use!

$6.00 USD

Resistor Bundle Set 1: 100ohm, 470ohm, 1k, 2.2k


10 resistors each of 100ohm, 470ohm, 1k, and 2.2k

$2.20 USD

2mm White Sintra


This 2mm thick 8x12" expanded PVC sheet has excellent robot-building characteristics.

$2.85 USD

Arduino USB Board (Uno R3)


The Arduino Uno is the all-new replacement for the favourite and popular Arduino Duemilanove. Now shipping R3!

$29.45 USD

Solarbotics Sumovore Atmel Brainboard V2.0

K SV-Atmel

This Sumovore add-on brainboard replaces the standard discrete logic brain with a powerful, programmable microcontroller! (Requires host product)

$20.95 USD

Solarbotics Sumovore BS2 Brainboard


This little number is an interface board for any BS2-compatible or Stamp Stack II controller, it is intended for use with products that were designed to accept Solarbotics add-on brainboards such as the Sumovore and ScoutWalker III.

$15.95 USD

Solarbotics Sumovore Mini-Sumo


The Solarbotics Sumovore Kit is a strong, modular design with over 500 man-hours of development and 21 prototypes behind it. It has more power, speed, and is less expensive than the Junun Mark III, Parallax Mini-Sumo, and Tab SumoBot.

$98.50 USD

20 MHz Ceramic Resonator


Ceramic resonators are a practical, compact, and reliable alternative to standard crystal caps combinations.

$1.95 USD

PN2907 PNP Transistor


This PNP transistor is similar to the TR3906, but can deliver higher maximum current at better efficiency ratings.

$0.15 USD





Remember Me

Forgot Your Password?

Don't Have an Account?
Sign Up!