paulm":1pk58wrp said:
Just ordered some of the carbide cutters, cheapest I found them was here
http://stores.ebay.co.uk/AZ-Carbide-Ins ... ood?_rdc=1
I'll wait till they arrive and then decide how best to use them, would prefer to use round section mild or silver steel as then I can use in my Rolly Munro or Simon Hope sleeve type handles, but might go square section bar and dedicated handles, not decided yet.
My existing multi purpose shafts are drilled and tapped to 6mm and 5mm, whereas I think these cutters are mounted using 4mm screws which would be a nuisance otherwise I could use the existing shafts !
Cheers, Paul
Picked up a 12mm square, 300mm long piece of "key steel" from Cromwells this morning for £6.10, it's basically a decent quality piece of mild steel, following advice from Mike and Philip in the thread about using square stock rather than round given the cutter configurations.
Going back tomorrow morning to collect two more bits of the same that they were having delivered from head office overnight as I had the last one in the branch this morning.
By happy coincidence a wee padded envelope from the US arrived at lunchtime with my cutters and screws
Only took a few days which was a pleasant surprise.
I chamfered the corners of the bar slightly for about a two inch length, to allow the bar to fit into the Rolly Munro and my other similar handle.
I then drilled and tapped a hole for the 4mm screws, mounted the round cutter and scribed around the base of it at the front top surface of the bar. Then set the Sorby Pro-edge table to 80 degrees to give a bit of relief under the cutter and rounded off the front end down to the scribed line so that the round cutter cutting edge overhangs very slightly but the bottom surface is well supported.
Then decided to grind away a little of the top surface of the bar to help with the location of the squarish cutters, so roughed that out on the grinding wheel and tidied up with a file. Took the recess about a mil' or so further back than intended but it's not really important.
Countersunk the top of the threaded hole slightly to allow the screwhead to sit low enough to hold the cutter in place.
Next one's I do I think the better sequence at the front end might be to grind the recess first, then locate the cutter and mark the centre, then drill and tap, then relieve the front edge as necessary, that ought to help with getting the back edge of the cutter lined up with the edge of the recess, but it's only a detail and not vital.
Had a very quick play with them before coming in for a cuppa, on a short cylinder of maple, used them on the outside as a spindle, and then hollowing into the end grain. Extremely impressed with the ease of use and how effectively and quickly it hollowed the end grain, effortless and no chattering or blocked cutter tips etc, just worked, fast and easy.
The finish looked decent too when I took lighter cuts with a delicate approach, some minor tearout on a tricky grain area, but nothing drastic at all on this piece of timber in any event.
Very, very impressed, and for the few quid involved an absolute bargain whether you buy from Peter's place in the UK or cheaper still (but a few days slower) from the US.
Some pics of the bits an pieces:-
Give it a go, easy, cheap and very, very effective
Cheers, Paul