Make your own resin moulds
be a special shape or unique design that you just can't find
in our range of ready-made moulds that you wish to cast in clear
casting resin. The only other option you have is to get a custom
mould made by us or to make one yourself. Send us an email with
your design and we can discuss the possibility of a custom mould.
Here to email us.
make your own moulds out of metal, glass or heavy duty plastic,
using things you have around the home. Providing the top of
the mould is wider than the base and has straight sides to ensure
easy removal, any item around the house can be used.
plastic that is too thin such as margarine containers, as this
type of plastic dissolves or melts when clear casting polyester
resin is poured into it. Moulds must have a smooth glossy surface
to give casts with a polished finish.
wish to create figurines or objects with undercuts that would
prevent you from releasing them from a plastic mould due to
rigid nature of the plastic, you can make your own latex or
silicone moulds that function perfectly.
You can find many
articles on how to make moulds on our website and we also have
several kits available to help you get started.
this article however we will go quickly through the method we
use to make a one-peice silicone block mould which is ideal
for resin casting.
How to make a mould:
First we need a flat board to stick our model down
to. A laminated timber board is ideal. You can use
either clay or glue to stick your model down.
a mould box around your model using off cut pieces
of laminated wood or similar. Clamp or glue these
pieces together making sure the whole thing is water
tight as you don't want expensive silicone leaking
out of the mould box.
Mix your mould making silicone together. We recommend
Craftsil 750 which is a general purpose mould
making material ideal for this type of project. Make
sure you use a folding action rather than whipping
the mixture together to minimize beating bubbles into
the material is mixted well, pour the mixture into the
mould box from a high point allowing the silicone to
come down in a fine stream. This will help to pop any
bubbles on the way down. Try not to aim the stream on
top of the model. Aim to the side so that the mould
box fills up around the model. This will help to minimize
bubbles on the surface of the model.
5) Allow the silicone rubber to set overnight.
6) Once the rubber has hardened you can disassemble
the mould box walls and remove the model from the
hardened rubber. You will now have a flexible rubber
mould ready to use. For longer life of the mould it
is suggested to let the rubber mould cure for an additional
day or so.
Colouring resins and effects
There are many ways
to add colour and effects to clear casting resin. You can add
opaque dyes to the resin to create a solid plastic looking cast.
There are a great number of opaque colours to choose from. You
can find our range of opaque dyes here.
If you are looking
for a transparent colour such as that of a stained glass window
you will need to use a transparent dye. We have a large range
of these dyes and they are very easy to use. Just add a few
drops to your resin mixture before pouring into the mould. These
dyes are very popular with resin jewellery creators as they
can replicate many effects of real stone and natural amber.
We have a full article on how to create faux amber resin jewellery.
here for this article. You can also find our full range
You can use transparent
or opaque dyes to create very interesting effects with multi
are using a multi section mould, multi colour pours are possible
by covering any section of the mould you wish to isolate by
covering with masking tape, until you are ready to pour that
particular section. When resin poured into an isolated section
has reached the “gel stage” remove the tape and
pour the next section, until all separate sections are poured
and gelled, then fill the mould to the surface with the final
pour. Comprehensive directions follow:
the mould is on a level surface- to ensure that the resin will
cure in a level position.
Add transparent dye to the clear casting polyester resin, adding
a drop at a time till you have the desired colour. Mix the dye
with the resin till the colour is even. Add 5 to 6 drops of
catalyst per 30ml of resin and stir for at least one minute.
This first pour should be about 6mm thick. Allow this pour to
gel but still be “tacky” before placing embedments
in the mould or simply making the next pour.
For the second pour mix the resin with drops of transparent
dye till the desired colour is obtained. Stir thoroughly then
add 4 to 5 drops of catalyst per 30ml of resin and again stir
thoroughly. Pour into the mould, filling to the top of the mould.
If desired a third pour of a different colour may be made to
fill the mould. Use only 3 to 4 drops of catalyst per 30 ml
of resin in any third pour.
After the surface of the mould is hard it is time to remove
the casting when you see it breaking away from the sides of
the mould. Do not leave the casting in the mould beyond this
time. It is easy to remove the casting by gently flexing the
plastic mould away from the casting onto a sheet of mylar.
Dyes and pigments
are not the only additives you can add to clear casting resin.
There are many other additives such as glowing powder to create
glow in the dark effects, metal powders to create cold cast
metal parts and much more. Check our tech tip articles section
on our website for articles on how to cold cast.
Make money with your castings
Resin has been the
starting point for many interesting business ventures. Many
of our customers have been using moulds for years to make frig
magnets, resin jewellery and other items which they sell through
their own websites, special crafty websites, ebay and at weekend
markets and fairs. We have set up a section on our website called
customer projects where we showcase a few of our really talented
can view this section here.
We have also set up a new
section on our forum where you can discuss your ideas and get
some help in making them real. Visit
our forum here. Feel free to email or call us to discuss
your ideas if you wish to talk to someone directly.
Here are a few of our customers
wonderful items created with clear casting resin.