As a side I’ve just had a local dealer try and sell me my actual machine for a extra £4000!!!
American iron! Actually they had a plant here!We had an enormous Blanchard polisher that was used to grind and polish rolled plate glass when I worked at Pilkington - every couple of years it used to get a refurb as the glass slurry used to cause problems if it wasn’t done. Proper old Brit piece of iron, the electrics were like something out of a Frankenstein film
What’s a bench stone?
I’d assumed it was British because it was so old!American iron! Actually they had a plant here!
What’s a bench stone?
If you mean granite surface plate it would be nowhere close to required tolerance
For stoning ways and tables without taking anything off that isn’t high.Unless you do alot of work in the range of tenths then i cant see the point in precision flat stones
More for deburing and almost lapping precision parts.For stoning ways and tables without taking anything off that isn’t high.
More for deburing and almost lapping precision parts.
Wouldn’t last 5 mins stoning tables.
In precision work if you got caught stoning the table on a jig borer you’d be getting the sack as it causes hollows
“premises” / Toy shopView attachment 228134 A view of the premises
Just by repeated rubbing a stone will cause hollows, especially on a scraped bed like a jig bore or jig grinder I’m talking from nearly thirty years experience of machine tool repairI was stoning something on the top of the compound the other day and literally just needed to remove a ding but with a normal stone you can see it’s cutting in places it shouldn’t be, hence wanting a set of these ground stones.
It shouldn’t cause any hollows if your just removing burrs, because the surface is dead flat.
To remove anything major I’d use a normal stone.
I don’t think any 60 year old lathes or mills are going to be working to such precision, taking a ding off a way our in my case the spindle nose on the Harrison could make a decent improvement.
I need to get some new stones.Just by repeated rubbing a stone will cause hollows, especially on a scraped bed like a jig bore or jig grinder I’m talking from nearly thirty years experience of machine tool repair
A normal good quality stone is pretty good
I’d bet if you put your compound on a blued surface plate it would shock you how out of flat it is!
I need to get some new stones.
Id test them when I get some but I don’t have a surface plate yet.
Unless you do alot of work in the range of tenths then i cant see the point in precision flat stones