For such an application lapping is much easier than (real) honing. Small honing tools are available, but at a price driving water into your eyes!!! Google pemamo.

A lapping tool can even made from hard wood, and Chinese diamond pastes are cheap.

Greetings, Hansrudolf

Chris,

Go to **LINK** and download the Bruce Engineering catalogue. On about page 70 (the pages are not numbered) you will see a 1/2" to 1 1/4" cylinder hone for about £15. Have one, works fine.

David

Edited By David Littlewood on 27/09/2012 23:10:59

Those three legged hones that Bruce and others sell are not true hones, they are what used to be called a "Glaze Buster".

A true hone will bring a tapered or out of round hole back true again, the spring loaded type will not as they just follow the existing bore.

I am not criticising the spring loaded type because they do have their uses, just pointing out that they are not a cheap alternative to a proper Delapena type hone.

I agree with the other comments above, just make a split lap and do it that way. Very easy and very cheap.

Phil

        I find a wooden lap is adiquate for my Stirling Engines, I put a cut down the center of it, an either use a little wooden wedge, or a wood screwin the end to expand the lap. When you finish the course grit, change to another bit of wood for the finer stuff, I sometimes go from brass polish to toothpaste to finish, just to get a mirror like surface.

        I must try the lead lap, got about 200Kg of lead, so that will go a long way.    IanS C

Edited By Ian S C on 28/09/2012 11:59:48