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2017-08-02 FormaShape Call

2017-08-02 FormaShape Call

Date

Attendees

Agenda

  • Discuss CAD that FormaShape has received and determine next steps on our end to get models finalized and manufactured
  • Address lead times, key deadlines, etc.

Minutes

ItemWhoNotes
Panel-to-Panel fasteningRuss, Former user (Deleted)
  • If the side panels are permanently fastened to the chassis, an over-under lip will be the best solution to bring panels together
  • Flanges can be added into the mold after manufacture using sheet wax, modeling clay, etc. in a "one-off" situation (i.e. pulling one panel from the mold)
    • Anything rigid will be sufficient to build flanges into the molds, however, it will potentially cause mold-lock
    • These flanges need to be properly coated/prep'd such that you can remove it properly from mold without any issues (This is mold-lock)
Cutting smaller panels from one large moldFormer user (Deleted)
  • Pulling a single panel and removing the door skin from it is doable. There are model concerns currently, however, the process is sound in theory
  • We are well within the mold size constraints that FormaShape can work
    • The majority of panels can be done in one large panel and broken down after the fact (Doors, top panels, trunks, etc.)
  • Some panels pose a concern of mold-lock, but this can easily be smoothed out in CAD with little effort
Model QualityFormer user (Deleted)
  • Russ says our model is very good, but needs some tweaking and modification to improve DFM
  • Headlights can be recessed into the aerobody directly, provided there is a draft angle
  • Lots of consideration needs to be given to male-female overlap sections, as these are where molds will get suck into the molds and/or provide issues during assembly
  • CNC cut mold is ideal for our uses, however, they can't perform any more than 1-2 layups, and last about 6 months if stored correctly
Mold DesignFormer user (Deleted)
  • Recommend using draft analysis and mold design features in Solidworks to ensure proper draft angle (~1 degree)
  • Will need to consider extra flanges around part:
    • 1/2" around edge of part to be trimmed away (giving clean edge)
    • 6" of perpendicular flange (parallel to pull plane) for vacuum bagging
    • extra area for overlap
Surface finishingFormer user (Deleted)
  • The best way to get a super clean surface finish right off the mold is to work the mold to get it as smooth as possible
  • Russ suggests against using a gel-coat due to the required mold prep and associated labor costs; Russ also suggests sanding-grade gel-coat which is easy to sand as a primary layer in the mold
  • Paint or vinyl wrap is the way to go, as gel-coat isn't durable under exposure to sun
CAD FilesDevon Copeland
  • Ideally, FormaShape will receive CAD of exactly the mold we want
  • Russ will send photos of the old mold (old CAD died in a server crash on their end)
Quotes/TimelinesTak Alguire
  • Russ has not had time to cost out the molds, but looking around $170/sq ft of machined foam
  • Lead times 3-4 weeks from receiving the CAD to first mold manufacturing, then 3-4 weeks to finish the first mold followed by 1 week per mold after that
  • Lead time roughly 4-5 months at Russ's current estimate, but dependent on how busy they are at the time we get parts to them
  • Ideally molds will be shipped in "sets" based on sizes, but FormaShape can prioritize shipments of certain panels (i.e. roof first, etc.)

Action items

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