The polishing of resin lenses requires a professional CNC lens lathe, and the grinding wheel for polishing lenses is also divided into several fineness, which can easily reach hundreds of thousands or even hundreds of thousands. This is the equipment for producing lenses, which is not available in ordinary optical shops. The grinder you see in the optical shop can only process ready-made lens hair training. The principle is to polish the edge of the lens to facilitate the assembly of the frame. You can buy a good brand for about 20 thousand, but it is completely different from what you think.

If you want to solve this problem, you can consider buying a pair of hyperopia lenses in an optical shop (because the lenses in the telescope are hyperopia lenses or hyperopia lens groups), and then let the master manually process them into the size of your toy lenses and assemble them. Of course, according to the toy quality you described, it is estimated that you can buy many toy models with a pair of such lenses.

I am doing training in an optical shop. If you have any questions, you can leave a message for consultation.