It is currently 28 Mar 2024, 21:10
9fingers wrote:As an engineering problem if I did not have a 4 jaw chuck, I'd mount a 90 degree angle plate onto your lathe faceplate and then clamp the square blank to that.
Adjust the mounting of the angle plate and the mounting of the blank with the tailstock centre. Tighten and drill.
If you have a batch to do, make sure the blanks are all the same size and use some stops to facilitate rapid change over of blanks.
Bob
Dalboy wrote:Can you get long nose pin jaws for your chuck like the Sorby Ones as they are the ones I use and have a greater use than the pen jaws.
If not then all I did was use my vice on the pillar drill with two pieces of wood with v cuts and two dowels to keep them in line will take photo's after the weekend
DaveL wrote:The brass tubes would be difficult to glue in if they were a friction fit, no room for epoxy (what I use) and if you tried super glue, there would be a good chance of it grabbing before the tube was fully inserted.
Is the drill a snug fit in the holes? If the blanks moved as you were drilling them that could result in over size holes.
Axminster do a couple of jaw sets that could be used the hold the blanks, CYLINDER jaws the 25 mm ones, item # 310424 would I think be quite good, giving the long support that is lacking with the C dovetail jaws.
9fingers wrote:Looking again at your photo Andy
is this a 4 jaw type? I can't quite see but if it is then fit four of those tall jaws and grip the faces not the corners and you should be fine.
Bob
Dalboy wrote:The tube should slide in easy but not be a floppy fit. If it is quite close a fit then super glue is fine but for a more looser fit then I would either use Gorilla or two part epoxy I prefer the later. If you use gorrilla glue then plug the ends of the tube and also find a way of stopping the tubes from being pushed out as I have had that happen to me.
If the glue does not get into all of the gaps you will end up with dry a join so when turning the wood/acrylic can break away from the tube
Dalboy wrote:9fingers wrote:Looking again at your photo Andy
is this a 4 jaw type? I can't quite see but if it is then fit four of those tall jaws and grip the faces not the corners and you should be fine.
Bob
The jaws you are looking at only come as a pair and are made for pen turning where as the ones I linked to are a full set of jaws.
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