Gallery, Projects and General > The Design Shop
Internal Tube Sander
Divided he ad:
Ant,
Oil with an abrasive.... Never sharpened a chisel on an oil stone?
You should always use a huge amount of oil with a hone. It will "pick up" otherwise and score the bore heavily, and that's with engine cylinders not something as soft as aluminium.
We used to do this sort of thing (I used to work for an engine re-manufacturer :thumbup: )
--- Quote --- but the fine ali dust turned the oil to a thick mud
--- End quote ---
You have to keep oil flowing through the bore to wash off the "mud" as it flows down through the bore.
you could do the whole operation in short stages cleaning the cylinder and stones with a solvent then re-applying oil etc.
If it works you could set up a filter system and an electric pump to recycle the oil and keep it squirting into the cylinder?
Proper honing oils.... Now there's a minefield!! Thin mineral oil (probably with cleaning agents added?). You could search for it if you have a few hours spare!
Hope this is of some help?
Ralph.
ant...:
Thanks for that tip Ralph, you have probably saved my hone from going through the window :bang:
And no ive never sharpened a chisel or used a sharpening stone. But if you have ever got oil on your wet&dry it sure clogs up fast.
Cheers
ant...
Rog02:
OK for what it's worth:
On our side of the pond we use kerosene for lubricant when glaze breaking cylinders and FLOOD it through. I think you guys call it paraffin. Diesel fuel will work too (I'm not big on the bio-diesel mixes for this kind of stuff).
The trick is to keep enough flow to wash the grit and debris away which means either a large spray bottle or a pump of some sort. Same goes for Wet-R-Dry sand paper which with a sheet of glass can make for a very nice bench lapping fixture for things like lathe bits, scrapers, and wood knives.
Roger
ieezitin:
Ant.
I just read all this thread and going back to one of your original questions about a bearing for linear movement, there are bearings called ball bushings, they have rows of balls housed in a tube that travel in the same direction as the shaft is reciprocating, extreme precision is achieved, but then the shafting has to be hardened and ground to match your bearing unit.
Not a cheap set up but is within reach.
Anthony.
ant...:
Hi Anthony
Thanks for that info on the bearings, when ive got time im going to finish that sander off. It needs a serious steel housing to rain in its 1.5hp, but when its finished I can see it being very usefull.
That Cylinder Hone came today, ive not tested it yet but i will publish my report as soon as.
Cheers
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