Making a tail light lens copy
Posted: Thu Jan 05, 2012 7:37 pm
Mildred came with one good tail light lens. Although new ones are available, they are pricey. Also, Mildred's existing lens is solid red, while the new replacements seem to all be red/amber, meaning I'd need two new ones. Over here in the US that's a fair outlay. So, as I have all the stuff on hand, I decided to have a try at making a copy just for fun (the left/right lenses are the same on Mildred).
I did this quickly, not using the right sort of casting plaster, force drying it, skipping much of the finishing process, etc. As a result the outcome is a bit rough, but works as a proof of concept. Although the shape in the pic looks a bit distorted it's perfect (the distortion is the camera angle/lens).

If I did this again using the right casting plaster and properly finished the mold, I could make a virtually exact copy of the original. I cast it out of epoxy resin with a clear red colorant. I'm thinking I might make a pair of clear lenses and use red LED's instead of bulbs. Ought to be a good deal more visible, if a bit obnoxious. I might also add a nice pair of interlinking M's to the mold for the Morris Minor bit.
If anyone wants details I'll write up the process with pics. The cost of all the supplied/materials would be cheaper than a pair of new lenses even if I didn't have the stuff around already. The application here, of course, would be for lenses that are no longer obtainable -- which fortunately doesn't include us moggie folk.
I did this quickly, not using the right sort of casting plaster, force drying it, skipping much of the finishing process, etc. As a result the outcome is a bit rough, but works as a proof of concept. Although the shape in the pic looks a bit distorted it's perfect (the distortion is the camera angle/lens).

If I did this again using the right casting plaster and properly finished the mold, I could make a virtually exact copy of the original. I cast it out of epoxy resin with a clear red colorant. I'm thinking I might make a pair of clear lenses and use red LED's instead of bulbs. Ought to be a good deal more visible, if a bit obnoxious. I might also add a nice pair of interlinking M's to the mold for the Morris Minor bit.
If anyone wants details I'll write up the process with pics. The cost of all the supplied/materials would be cheaper than a pair of new lenses even if I didn't have the stuff around already. The application here, of course, would be for lenses that are no longer obtainable -- which fortunately doesn't include us moggie folk.