7
Step 1. Start up
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In this guide, a 6mm diameter ball endmill is used for roughing and finishing cutting and Sanmodur 7K has been
chosen as the material. However, cutter sizes will be influenced by your part.
K1Sanmodur
+1+1Also known as chemical wood or modelling board. There are many variations in density, colour and
surface finish. All are lightweight and easy to cut. The cutting waste is a powdery dust. It is often used
for initial concept prototypes in order to check shape, size, etc.
L1Modelling Wax
++1This hard form of wax is supplied in varying blocks, tubes, sheets and cylinders for modelling. It is easy
to cut but can also melt with the heat generated by the cutting tool. Modelling wax is particularly
popular for investment casting products such as jewellery and dental applications.
M1ABS
++1ABS is a high-impact resistant plastic which is light and rigid, making it suitable for many moulding and
machining applications. It offers good electrical insulation, but has low resistance to certain chemicals.
It is widely used for the automotive parts, helmets and tubing applications.
N1Polyacetal resin
+++Also known as POM (polyoxymethylene), Jura Kon, and acetal resin. Used heavily in thermalplastic
applications for precision mechanical parts. It is durable, dimensionally stable and resists oil and
solvents. Commonly used to make small mechanical components such as gears in CD players, etc.
O1Acrylic
Acrylic is a hard weather resistant, transparent thermoplastic which can be cut, engraved, glued and
thermo-formed. It is widely used for signage, display cases, aquariums, screen protectors and light
clusters – basically where a UV stable transparent material is required. The material is prone to
scratching and can melt when machined.
Consider the following when choosing your material:
+!How strong does it need to be?
+!How durable does it need to be to withstand operation testing?
!Once cut, will it need painting or coating?
+!Does your design require a particular material finish such as
wood grain or high gloss?
+!Is the material readily available?
+!Is the material cost appropriate to the project?
P"f there is no specific requirement, or you have less experience in
cutting, you may wish to use a modelling board such as Sanmodur.
Sanmodur 7K is what is typically used in Roland DG Japan (local
alternative modelling boards are also available).
The MDX-40A was specifically developed to work with a wide range of
synthetic and natural materials
The following list describes the key characteristics of the most popular synthetic resin
materials:
K
L
M
N
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