[CMOTD]

Made some progress with the pit lane during the last couple of months. Here are some photos of the real thing which it is based on:
                   
This is the current state:    
                               

Details:
Pit walls are modified Slot Track Scenics items. I had to cut off the fixing lugs for plastic track, fill in the holes where the fencing posts fitted then paint them and add the signage.
 
The lightbridge is scratch built. The top bit containing the leds was fairly simple to make from a piece of Foamex sheet and milliput came to the rescue to fill in my cutting mistakes!  It took a while to source the upright support trusses but I eventually found something suitable on eBay. A wargames modeller was selling 3D printed tower kits which were too tall for my needs but I asked him nicely and he made a smaller one for me. A bit of paint and signage completed the whole thing for a quarter the cost of any commercial offering.

Pit perches are readily available Avant Slot items. As the track is not meant to replicate a GP circuit I didn't bother with the full on timing stands.

TV tower is restored Scalextric item.

Figures are a mixture of Avant Slot and MRRC/Monogram. I managed to pick up a full set of the obsolete Avant slot figures on eBay for a nearly reasonable price and the MRRC ones were review samples from way back when I edited the NSCC magazine. I knew they would come in handy one day!

Pit boards are from Slot track Scenics.

Marshal flags are made from cocktail sticks and scrap fabric.

Pit exit lights are model railway traffic lights found on eBay. LINK All three colours could light up but they were such a pig to wire in that I only bothered to use the green ones.

Kerbing done as before with individual overlapping card tiles - it takes forever and you can get really sick of the sight of them!

Staggered grid markings done with pinstriping tape. It always strikes me as somewhat silly to put them on an analogue track that can only run two cars at once but it does improve the appearance. Pit Lane markings done similarly but with yellow tape.

Garages are Carrera and the problem with using proprietary stuff is that it is meant to line up with plastic track and sits too high on a wooden one so I discarded the black base and the advert boards on top. I also had to hacksaw the fixing lugs off so the walls would sit flush with the track. Also, real garages are not pristine white so gave it a light spray of grey primer to make it appear more natural. This did not go well as I overdid it on several occasions and had to strip it back and start again. Still not perfect but as good as I am likely to achieve. Sliding doors were painted with grey primer followed by Plasticote aluminium. Next I needed something for the interior walls, used a couple of pictures of real Donington pit interiors and spent several frustrating hours cropping and resizing them. I am not good with Photoshop so much swearing and wasted prints were involved, but eventually managed it and printed them off on sticky back photo paper. Garage floors are from Carrera4fun site, resized and trimmed to fit.

Still a way to go before completion. I need to  add some tools, mechanics and cars to the garages and light them up then finish the control tower and another grandstand. The new fishing season starts in less than a month so work may well grind to a halt for some time.