Woodchipper
Member
Saw a video where the fellow chatted about different type of pen blanks as acrylic, etc. How can I tell the difference? Some blanks come with a label, some don't.
How to determine different synthetic materials?
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Jarod888
Member
Probably the easiest way to tell the difference between the two "common" types of plastic are:
Acrylic will be square, with no visible chips, it is often very shiny.
Acrylestor is a polyester resin and often has noticable chips out of the edges, they appear to be very similar to when I windshield gets a chip. It also tends to be dual when in blank form.
Acrylic will not chip when dropped on a hard surface, where acrylester will.
Acrylic will be square, with no visible chips, it is often very shiny.
Acrylestor is a polyester resin and often has noticable chips out of the edges, they appear to be very similar to when I windshield gets a chip. It also tends to be dual when in blank form.
Acrylic will not chip when dropped on a hard surface, where acrylester will.
jttheclockman
Member
There is Polyester resin cast, Alumilite resins. Both are different look and feel and polish different. Then there is the older Italian resins (celoplast) that may have more ingredients in them than we know. Then there is Truestone material. Also Casin material. that is different material. All resins.
JohnU
Member
The commercial acrylics are the hardest to identify. Some you can tell by smell, others by appearance like Kirinite, Acetate, Cellulose, etc. As said above, the hand made ones are easy… PR, Urethane or Epoxy. PR will be the hardest and shine very easily. I think Urethane will be the most common and turn very smoothly and has a distinct odor ( especially alumilite White). Epoxy is a toss up because there are so many brands but it tends to turn an amber color sooner than most is large shaped but is seldom noticeable once turned thin unless on a white background.