I use these lenses but finding a reliable source is difficult. Ebay for the random purchase, but wish I knew of a reliable supplier with all or most of the sizes and colors.
Thanks
Bob
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Bob, try P&D Hobby Shop in Fraser, MI.
Will do...any other users have a good source for these?
Bob
If you are looking for headlight lenses also consider using microscope cover slips. Available is 3-8 mm round which should cover most headlights in O scale. Being glass they are not easy to size but will be flat and clear. Very very cheap.
Search ebay for them.
Pete
You can also use round paper punches in various sizes to punch plastic sheet to make the lenses.
Pete, where do you find these small round cover slips, I searched and didn't find a source.
Here is one source John. There are many more. These folks have a good selection of sizes.
https://www.ebay.com/itm/100pc...k7HFB4sVHII8b0_eKyAQ
Pete
Nice, but I don't think I need a hundred of them for $20, too bad there's not a way to get an assortment. 
I got 8 mm ones for 5 bucks. Repackaged them and sell them at York.
Pete
My needs don't usually include headlight lenses. I want the small red, green ,amber, and clear lenses in sizes .096" or slightly smaller that MV Products was good for. I can usually get them by watching Ebay, but was inquiring about the potential for a better supply source. I do appreciate the suggestions offered.
Bob
I bought a cheap set of leather punches off eBay to bop lenses out of clear styrene (or acetate or whatever).
I have a set of those, never thought of that, thanks Norm! 
Reviving an old one, but I wanted to let you guys know that PSC carries some of these as well.
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I don`t care for jewels. Something about them looking fake. Make your own MV lenses. Super easy with slow setting epoxy, a tooth pick and wax paper. You can tint the mixed epoxy with a little acrylic paint. Dip the tooth pick in the epoxy and let it drip off. Makes a perfect circle every time. They basically cost nothing and I have a lot of drips on the wax paper. Let them dry, sort through them, toss the rest. 
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@mr buttons posted:I don`t care for jewels. Something about them looking fake. Make your own MV lenses.
Well, the thread was really about making headlight lenses. Jewels are fake, that's why they look fake!
@mr buttons posted:I don`t care for jewels. Something about them looking fake. Make your own MV lenses. Super easy with slow setting epoxy, a tooth pick and wax paper. You can tint the mixed epoxy with a little acrylic paint. Dip the tooth pick in the epoxy and let it drip off. Makes a perfect circle every time. They basically cost nothing and I have a lot of drips on the wax paper. Let them dry, sort through them, toss the rest.
Great idea! What kind of epoxy have you found to be the best?
PSC does have lenses too, but they are limited in size. I was looking for jewels for some postwar/MPC engines...I love those PW jewels. Brings back some great memories when the Christmas lights would catch them just the right way.
@mr buttons posted:I don`t care for jewels. Something about them looking fake. Make your own MV lenses. Super easy with slow setting epoxy, a tooth pick and wax paper. You can tint the mixed epoxy with a little acrylic paint. Dip the tooth pick in the epoxy and let it drip off. Makes a perfect circle every time. They basically cost nothing and I have a lot of drips on the wax paper. Let them dry, sort through them, toss the rest.
But how do you get the correct concave in the background foil to reflect the light? That was the sucess to MV lenes compared to jewels.
Larry, Use the 2 ton slow curing epoxy. 24 hr cure? The 5 minute stuff cures way to fast to get many drips. The home made ones are naturally flat on the bottom against the wax paper. They are glossy and reflect the ambient light. I have used a bulb behind locomotive class lights.
@mr buttons posted:Larry, Use the 2 ton slow curing epoxy. 24 hr cure? The 5 minute stuff cures way to fast to get many drips. The home made ones are naturally flat on the bottom against the wax paper. They are glossy and reflect the ambient light. I have used a bulb behind locomotive class lights.
Thank you. So something like this? - Epoxy
I did see some 30 min stuff in my search as well.
That should work.
My issue with MV lenses, is that they yellow quite a bit, over a fairly short time. Seems like they are a cultured resin product that changes color with age. Just my two cents....
Every one of these I ever used turned yellow
