[JMay]

Projects.

Work in progress on a Sunbeam Tiger and Bill Thomas Cheetah. Tiger uses a STL file sourced from the net, the Cheetah was a scan of a lumpy resin shell picked up recently at Cobham.

The Tiger shell has been modified to race car specification for the local club’s pre 67 Goodwood class. CAD used to address some core issues where the original file seems to have been a solid that has been hollowed out too thick /thin in places. Once that was out of the way then a redraw of the wings to fill in the original arches then cut new arches with flares, new parts include underpans front and back, a bonnet scoop, hard top and a driver/interior, lastly the rear sectioned to facilitate vertical printing, and supports added.

   

The Cheetah scan was a dog’s dinner and I didn’t realise how bad until after I had tidied up the resin shell, painted it and loaded the running gear so too late to redo. The scan took a lot of correction and swearing in Blender to fix to a usable file as the shell had a slight twist to it, and some oddball artifacts, ripples etc from the scan. This necessitated around 6 hours work in Blender to thicken, smooth out the ripples, remove mesh errors, and finally section in half and mirror to even up the shell. CAD work took another 4 hours to cut out bonnet apertures, arches, add an interior, chassis, fuel injection detail, petrol caps, bonnet louvres, air scoops on the rear pillars, and stretch the shell lengthwise as too short to scale.

   

Cheers
John