The Porsche G935 pieces for my sons have been moving along. Shop time ends up being split between working on them and building a new spray booth so I can paint them properly when ready. The booth has been more work than expected. Lots of finicky finagling to try to keep it 'airtight'.
Since it is winter here, the shop in the basement is rather chilly. To keep everything close to room temperature I carry the work-in-progress bin up and down as I work on them. I do all the CAD and 3D printing upstairs so I need to keep them handy as reference.
White styrene spacer plates have been added to provide the base for the engine bay 3D printed parts and fender filler pieces have been blended in prior to final shaping.
Rough fender filler pieces have just been added to begin closing up the engine bay space.
The jig plate holes look oddly positioned because I mistakenly placed them backwards lengthwise. Oops! They will ultimately be plugged.
The plan view nose profile has been shaped and blended into the front fenders.
Chiseling the hood details has also been started. The broad inlet vent and facets on the fender profiles are roughed in.
Nose profile and fender facet templates were printed on glossy photo paper which has a 0.010" plastic sheet as a base. That makes the templates flexible and durable.
Templates for wheel wells, axle placement and profile checking are printed on paper and adhered to the fenders to allow frequent checking and re-checking of details.
The profiled rear fenders are off to the left in this shot, ready to be glued in place. Some early door profiling is underway.
This was the spray booth that I used through completion of the Porsche 935 Artist's Proof. Lots of cardboard and duct tape and fumbling around. It worked, barely. Lots of extra time was needed to get the dust and dirt out of every layer of finish added.
It was mainly re-purposed cardboard boxes and duct tape. No incoming air filtration made it primitive at best.
The new spray booth in progress is a downdraft setup with the fan vibration isolated from the booth by being bolted directly to the basement wall and flexible foam between it and the booth structure. Too many airflow bends I know, but the 10" fan should handle them. Needs lots of insulation and a vapor barrier to prevent moisture and mold. It's mighty cold and dry now but will become aggressively hot and humid in coming months.
The plenum will mount above the fan with filtering and baffling. The window in the left wall is one of two openings that will have sticky filters for incoming air. They will be covered when the booth isn't being used.
Blue tape marks the future door opening. A heated and ventilated paint drying box will be on left, paint preparation and storage will be on the right. The ceiling will be covered and the front wall added. Having the kitchen sink feeds and drain, heating and sillcock lines directly overhead requires providing access panels for any future needs. Complicates the whole thing.
I'm building the trickiest bits first so that I can do all my testing as I apply the early sealing and priming coats. By the time I'm ready for finish coats, hopefully the booth will also be finished.
Next up - 009 – Wheel Wells - To get the stance right, the position and shape of the wheel wells is critical. The bodies are now almost at full width and the main profile shapes have been refined. It’s time to do the drilling and shaping.
For more of the story click on any of the following links:
012 - 2nd Skins Layer-Splitters
- You’re here in the list.