What is this tool?

[charlie coghill]

What tool is this? I believe that it is a lapping plate. When I received the tool both plates were covered with the protective covering.
This was in my Fathers tools when he passed away.


Thanks
Charlie

[Ian B]

Yup,

Two lapping plates

Ian

[billyboy]

or a template for making small tartan kilts


bill

[Dave Opincarne]

OOooo, Nice! Yup, that's what they are and if they're in your way just let me know, I'd be glad to help you find a little more space in your shop.

Dave

[Alistair Hosie]

or a template for making small tartan kilts
watchit laddie Alistair

[Thrud]

Charlie
Yes they are lapping plates - very nice ones it looks like - they should be checked for flatness on a granite plate. A ring and plug lap made of brass, bronze or copper is used to flatten them. The cast iron plates work beautifully with Diamond compounds, btw cast iron laps are used to polish diamonds - they wear very little over time, amazing stuff.

I too would be willing to take (buy) them off your hands if you don't want or need them.

[IOWOLF]

are THOSE cast iron wings on a craftsman table saw? under the lap plates.

[charlie coghill]

Thanks Guys;
At first I did think that you put material between them and slapped them togeather to get the checked pattern.

I thought that they were lapping plates, but had never seen this type and would hate to have damaged them if they were for some other use.

Sorry people I have a use for them,that is why I was checking to make sure they were plates.

Thrud; I understand that they should be checked. As you can see from the one that I did not clean it still has the protective coating on it. I dought that they have ever been used. Please educate me on how a ring and plug lap is made and used. Forty years ago we used a cast iron lapping plate to lapp valve plugs. But I never used the ring and plug to flatten the plate. If the plate need some work it was sent to the other end of the shop and was ground, but I do not remember any one ever lapping the plate to make it flat.

IOWOLF that is a craftsman saw and the wings are cast iron. Tje saw just has the one side that you see in the pic.
Thanks agin for the replys
Charlie

[IOWOLF]

I described the tool . what did I win?

[charlie coghill]

IOWOLF;
It is in the mail.
Charlie