Part Design and Rapid Prototyping for BMC. Reducing the Time to Market for New BMC Applications. Part Design Guidelines for BMCs. Design Considerations for BMCs. Design to optimize inherent properties of material Use structure as-opposed to mass wherever possible
Reducing the Time to Market for New BMC Applications
Wall Stock Recommendations:
Parts with Varying Wall Stock
Parts with significant variances in
wall stock can be successfully molded
Draft: Angle or taper added to vertical surfaces on a part
to allow for release from mold during ejection.
Blend intersections with fillet radii wherever possible.
Commonly utilized in automotive and electrical switch-gear applications
BMCs are hardware-friendly materials that are capable of accepting a number of common types of mounting hardware
Mounting Boss Sizing for Self-Tapping Screws
Insert-Molded & Secondary-Installed Threaded Inserts
Commonly used in BMC applications where service or installation requires multiple assembly / disassembly
Refer to hardware manufacturers specifications for hole sizing & application-specific information
Given the range of flex modulus achievable in BMCs, snap details are possible provided that they can be designed with an interference that can operate within the flex-range of the material grade selected.
Feel free to contact BMCI’s Technical Group if you have a proposed snap design and would like to review it for feasibility in BMC.
Vacuum Gearbox Housing
As Molded Finishes
From Art to Part
The ability to quickly provide customers with prototype parts in our materials has proven to be both a valuable sales tool, and an effective method of shrinking product development lead times. Since BMC thermosets do not lend themselves to traditional “Rapid Prototyping” processes such as SLA (Stereo Lithography) of SLS (Selective Laser Sintering), we have developed our own prototyping process for providing net-shapes to our customers for evaluation.
Our process first involves the pre-molding of plaques, or blocks of the BMC formulation selected for the application. These “Billets” of material are then laminated together using epoxy adhesives, or parent resin to form a “Blank” that is roughly the size and shape of the part. Lastly, the blank is 3D machined in our mold shop from the customer part file to produce a net-shape prototype part. We have used this process to produce parts as small as a plumbing fitting, and as large as a stove top frame.
BMCI In-House Tooling / Prototyping