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Paint shop preparation

I have a date booked in at a local spray painting shop so it was time to get everything finalised and ready for transport.  Various pinholes in the fibreglass flares/wheel arches were patched up with spot putty and sanded smooth. Some time was then spent making sure they still fitted properly against the body with a small (~1mm) gap for a rubber seal, and also clearance at the ends of the flares around the door sill seams. Once they were prepped, I masked off the underside of the arches and painted a couple of coats of underbody coating on the underside to mitigate any stone chips. Unfortunately I managed to knock two of the arches off a high shelving rack which resulted in a few hairline cracks in some of the seams (from when I split and modified the arch curvatures). I had to grind away a channel into those seams, add some new fibreglass matt/resin, sand and then re-prime it. Other parts that will be painted in the body colour have already been painted in primer. These had some m...
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Final Primer Sanding Part 2 (shell)

Moving on to the sanding the Mini shell (which already had one coat of high build primer applied), this was block sanded with 180grit to catch any minor variations in panel flatness. For example :  After block sanding there were a few areas where I had sanded back to bare metal and needed a coat of epoxy primer to cover those spots : I found a few small chips which were filled with spot putty and sanded smooth then painted some areas with another lighter 2x coats of high build primer, waited a week or so to cure and block sanded again with 180grit.  I used LED worklights to illuminate down the length of the shell to help highlight any larger  imperfections that needed an extra block sand. The bright worklights are important when sanding larger areas where it's not hard to miss minor imperfections in the paint surface however I found a handheld inspection light held close to the panels worked extremely well to highlight really small scratches in all areas. Inside the boot ...

Final Primer Sanding Part 1 (panels)

The Mini shell and panels had been sitting under some old bedsheets with its first coat of high build primer for two winters and upon close inspection showed only a few areas of surface rust showing through the paint. Luckily they were only on some panel edges which were easily sanded and re-primed.  Once that was sorted, the bonnet, doors and bootlid exteriors were guide coated and block sanded with 180grit. I found one of the doors needed a really thin skim of filler over two larger areas from when I did some panel beating to correct the door-to-body alignment.  After the 180grit sanding, the panels were again guide-coated and block sanded with 240, 320 and 400grit. 400 grit was either on a DA sander (with interface pad) on large flat areas, or hand pads / sanding sponge for detailed areas. With everything sanded to 400grit, "super-fine" (500-600 grit) foam hand sanding pads were used for the final sand over everything. Rubbing through the epoxy primer (to expose bare metal...

Articulated Bonnet Hinges (Fail)

After a delay of almost 1 1/2 years on the 4E-FTE Mini project due to a significant back injury, recovery, long wait for surgery, and more recovery/rehab I've been able to restart work on the Mini project starting with some low-level physical movement.  The standard Mini bonnet hinges only allow the bonnet to open to a limited angle and a single-piece hinge with an altered hinge shape barely improves this opening angle (as I've tried in the past), and while I love the idea of the articulated hinges that used to be sold by Minivation UK, they have not been available for many years so I decided to try it myself. Without a 3D scanner I had to manually confirm the panel shapes and mount locations around the scuttle panel with manual mark-ups, sketches and 3D printed test pieces templates. Using motiongen.io (free online software tool used for designing and simulating linkage mechanisms) the linkage locations were eventually determined. A few iterations of 3D printed prototypes fin...