How much work to build a mechanical massager?

Factual Questions
1

This may be a totally weird and random question but…

I want to build a foot massage device that mechanically applies squeeze pressure to the sides of feet and has a roller on the bottom. Basically, a DIY version of the stuff you can buy in Brookstone.

How much work would this take? Would it be cheaper to just purchase, when you factor out the time involved?

I have no idea how advanced or easy to build those things are, but it’s something I’ve randomly wanted to do for a little while.

2

First, why do you want to do this?

If you are trying to solve a medical problem, this is not the way to go about it. You need to buy professional equipment that has been tested, and that has been approved for your situation.

Reason? There are too many things to go wrong. E.g., suppose your device goes haywire, squeezes very hard, and won’t let go. These kinds of things are very embarassing to explain to hospital emergency staff. And don’t get a whole lot of sympathy. (Ahem, not that I would know, of course.)

Second, there are quite cheap mechanical rolling/massage machines. If you can’t afford them, you possibly can’t afford the parts for a DIY version.

Even commercial massagers can be dangerous. I was trying to use a couple to deal with the aftereffects of an auto accident. Bad idea. A good idea was going to highly qualified physical therapist. She fixed the problem in 30 minutes, for < $100.

3

To be totally honest, I have an idea for a niche one of these products that I would personally use and I wanted to build a prototype. Might sound silly, but yeah…

4

Ah, Ocardowin, I thought that might be your motivation.

Two quick suggestions.

  1. Mechanical massagers have health, legal risks. Notice the label, perhaps not on all devices, that warn the user not to use for longer than a limited period, to discontinue in the event of discomfort, etc. These aren’t occasional problems.

  2. Last time I looked, there are a few Internet sites where inventors hang out, many of whom are experienced in problems with product development. At any rate, they are interesting to talk with. Offhand, I don’t have one to recommend, but I’d dis-recommend the ones where many people are offering (for payment) to help you “develop” your invention.