Acrylic PMMA parts

HONY®PMMA acrylic is a transparent plastic material with outstanding strength, stiffness, and optical clarity. Acrylic sheet is easy to fabricate, bonds well with adhesives and solvents, and is easy to thermoform. It has superior weathering properties compared to many other transparent plastics.PMMA (PolyMethyl-MetaAcrylate) is an amorphous thermoplastic material with very good optical properties. Acrylic is often used as a glass substitute. Acrylic is hard and stiff but brittle and notch sensitive.

Advantages of Transparent Acrylic Part

Excellent optical clarity, Good Abrasion Resistance, Excellent environmental stability, Good Heat Resistance, Good Chemical Resistance. Flammable but low smoke emission.

Acrylic processing Component Uses

Automotive light covers, Lighting fixtures, Clear Bottles and Container prototypes, Lenses, Shop-fittings, Aircraft glazing, Novelty display cases, Signs, Appliances, Modern furniture, Jewellery items, Medical/Healthcare Applications. PMMA has a good degree of compatibility with human tissues.

Further considerations

PMMA is an economical alternative to polycarbonate (PC) when extreme strength is not necessary. Common trade names of Acrylic include Plexiglas, Lucite and Perspex. Large and difficult parts can be easily glued.

HONY Plastic provide customized cnc machining laser cutting white transparent acrylic/pmma plastic parts

CNC machining of mechanical parts frosted keyboard skin acrylic mechanical keyboard

CNC machining PMMA (Acrylic) Materials with excellent mechanical properties, accuracy and repeatability from metal and plastic. 3-axis & 5-axis CNC milling available.

Because of its transparency, PMMA is often used as an alternative to glass and is popular in the interior design, construction and chemical industries. 

It is also regularly used in advertising to fabricate signage, lightboxes and billboards.

Surface Finish

Bead blasting

Bead blasting results in parts with a smooth surface with a matte texture. Used mainly for visual applications and can be followed by other surface treatments.

Painting

Painting the surface of a part improves its aesthetic appearance and can provide brand recognition to consumers. In addition, painting can have a protective effect on parts.

Polishing

Polishing is the process of creating a smooth and shiny surface, either through physical rubbing of the part or by chemical interference. The process produces a surface with significant specular reflection, but in some materials is able to reduce diffuse reflection.

HONY Plastic Manufacturability

Tolerance

- Standard: (+/-) 125 µm -Achievable: (+/-) 100 µm , (+/-) 50 µm

Wall Thickness

- The minimum wall thickness should be at least 1 mm for machined parts. - 2 mm is suggested for better strength and 2.5 mm for a rigid wall.

Pocket depth

- Pocket depth should be up to 3 times the diameter of the end mill

Engraving

- Engraving is preferable to embossing - For the clear, legible text consider fonts such as Arial or Gothic - Design letter strands with a width of at least 2 mm

Internal Radii

- The minimum internal radii possible is 1 mm - In general, internal radii dimensions depend on the depth of pocket being milled

Holes

- Use standard drill bit sizes - Minimum of 1 mm in diameter

Threads

- Use standard metric inserts - Smallest threaded insert possible is M2