AMT Oscillating wet stone question

[sparkie2056]

Hi All,

I was given a working AMT Permatrak Oscillating Wet Stone Model #5290

Now this thing may be a toy to some, but it is cute and cuddlie and cost me zip, and it works.

I am looking to find a manual for it, if someone can scan it, or perhaps who the underlying maker was, since AMT does not come up in any way in google, except for a picture or two and a bidding war on ebay. Perhaps a state/city etc for AMT itself.

I would like to get a rougher stone for it, and a finer one.

It is a weird thing ,the stone (marked Japan and 800) slides back and forh like a reciprocating saw and the stone sits in a shallow "tub " on the reciprocating base.

please drop me a line if you can help. I don't know if this thing is worth using, or just pulling the stone out and using it by itself. I figured that 800 was the grit size, but how that works with American grading suytem I can't say.

thanks

chris-long island

 

[Leldon2]

I have a model 5291 and have had many years of fine work on it. The wet stones wore out so quick and they were so expensive I am using dimond stones I bought from Harbor Freight, they come in a set of three, Course,Medium, Fine, the length and width is perfect but they are to thin so I took mine and cast a much thicker base on them using Dental Rock you can get at any dental supply house or you cuuld use an Epoxy But the Diamond stones work perfectly.

 

[sparkie2056]

thanks I gave up on info from here a long time ago. The concept f the thinner stones with a block of wood or whatever is a great one. I am going to make a circular grinder with a 78 rpm record player. You rip it out keep the puppy locked on 78 and make disks from carboard (or wall paneling) and glue on sheets of high quality grit. Make a disk from an old leather coat/coach and impregnate with polish for the best slow buff. I was told 70 rpm's is perfect, so 78 is very close. It requires NO water and seemingly slow, can blunt a gouge if you aren't careful.

Thanks so much for your great reply.

chris

Long tax Island NY