Materials and Cost
Glue (preferably cyanoacrylate based)
Power Drill with Round Saw attachment
Ethylene vinyl acetate foam (1/10 inches thick)
Old Lens Cap (If you own any type of lens, you should have plenty of these.)
The most expensive part of this project may be the power drill. If you don’t already have one, you can purchase a cheap one for about $25. You can also rent one for a few dollars a day from your local home improvement store if you really have not use for one. The PVC pipe usually cost about $5 since you really don’t need that much of it. Just measure the size of your camera’s opening, and then purchase that size pipe. If you have to, bring your camera with you and try out a few pipes until you find one matches the opening.
The saw that you use depends on what you have handy. A circular saw works very well for cutting through thick material. But, if you only have access to a handsaw, use it; just be prepared for some muscle aches. You can purchase a handsaw for about $10. The ruler, glue and hot wire will cost you less than $10.
So, if you already have all the tools, you’re looking at a $15 project. If not, you’re looking at between $40 and $50, which is still cheaper than most microscope adapters.