Machineable Plastics​

Machineable Plastic #R1/HG3000- Donut Shape 10ft. OD x 9.2 ft. ID x 10 in. tall. Approx. 2300 lbs 

All the above are available in stock sizes.  PLUS custom shapes & sizes such as rectangles, discs, donuts, solid cylinders & combinations.


Patch repair kits are available for each formulator if you want to make your own Machineable Plastic.


SMALLER STOCK SIZES FOR MACHINISTS, PATTERNS, SIGNS, PROTOTYPES, CARVINGS, TOOLING, MODEL MAKERS ARE ALSO AVAILABLE.


Contact Goldenwest Manufacturing, Inc. at sales@goldenwestmfg.com for pricing, order stock, custom sizes or other formulas


Note: Boards are not precision cast, more like rough lumber (tolerances + 1/8")


FREE SAMPLES


​We usually ship stock sizes within 1 to 3 days. FOB our facilities. Prices subject to change without notice.



13100 Grass Valley Ave, Suite A

Grass Valley  CA 95945


sales@goldenwestmfg.com

BUTTERBOARD®


Goldenwest Mfg., Inc. makes urethane castings such as the pictures here. Butterboard is nonabrasive for machining, glass smooth, modeling board for signs, in schools, machine trade shows and CNC proofing, thermoforming tool, that you can carve, mill, sand, rout, paint. Density is 48 pcf.  1.50" to 6" thick.  (tolerance + 1/8")

Mandrel with 2" pipe

R1/HG3000


Tooling grade, strong, smooth, dimensionally stable. Use for patterns, molds for composites, thermoforming tool, intricate prototypes, tooling reference fixtures, models. Density is 101 lbs. pcf. Unlimited thickness or size. Parts have been cast up to 14,000 lbs.

R1/P1 EASY GREEN®


Nonabrasive urethane and polyethylene combination board. Machines like very hard wax but makes a permanent part.


Test machine for trade show and school demos, thermoforming tool, prototypes. Not for painting, cell structure has small pinholes. Density is 65 lbs. pcf.


Machineable Plastic #R1/P1 Easy Green


Disc shape minus corners, GMI Casting prior to machining.51 in. Diameter x 15 in tall. Approx 2200 lbs Mold: plywood and sheet metal.

'Model Board® Resin 100®


Nonabrasive 100% resin, no fillers.  Smaller stock sizes available. Perfect for machining small patterns, models, jewelry designs, prototypes and CNC proofing.  Very nice smooth cell structure. Ivory color. Density is 64 lbs. pcf. 

R1/M15.2


General purpose pattern board. An alternative to 2" x 16" x 60" plank boards when you want a custom shape and size rather than cut and bond. Density is 61 lbs. pcf.

AGSS DOLPHIN 555


​Tom Anderson, Anderboat Models Benicia,CA Machine with BUTTERBOARD®

​Bay Craft Designs


​Toms River, New Jersey Carved out of BUTTERBOARD®

"Delighting our customers since 1970"

Goldenwest Manufacturing, Inc. Prototype Design Material Urethane Castings Machineable Plastics


Stock sizes: 1.50" to 6" thick:     12"x12"   12"x24"   24"x24"   24"x48"  (tolerance +1/8") Solid Cylinders, Rings, Donuts, ​ and Custom Shapes & Sizes. Can do very large parts.