| Gallery, Projects and General > How to's |
| How to clamp these up |
| << < (3/4) > >> |
| hopefuldave:
I'd just use a V-block lying on its side against the mill vice's fixed jaw... That may be Too Simple though, I'm kind of assuming you have a mill vice that'll open far enough! If your vice isn't big enough it wouldn't be a hard job to make an impromptu (just-about-accurate, not talking surface ground!) shallow V-block that *will* fit in with the 'bar riser? If you have a lathe with a 4-jaw chuck, you could centre-punch the hole location, get the punch mark centred with a wiggler and drill from the tailstock - would be my easiest solution if I hadn't the big-enough mill vice. Judging from the risers' appearance, you have a suitable lathe... Dave H. (the other one) |
| MadNick:
Thanks again for all the help and suggestions. I have to do more measuring before doing any cutting and will let you know what happens :) Nick |
| Lew_Merrick_PE:
Nick, Speaking for ignorance of the details, you want to drill through from the "back side" of the casting concentric with the (2) ø5/16 holes. Is that right? It seems to me that: (1) You have a pair of bosses that appear to be 90° to the spot-faced surface around the holes. (2) The (ø5/16) holes have a spotface about them that is (probably) normal to the axis of the hole. Thus, you could make an appropriate diameter locator that has a (presumably) ø5/16 tit on the end (or pressed in ø5/16 pin) to locate the hole concentric to your spindle. An angle plate butted up against the bosses on the end should give you alignment in that axis. A pair of screw jacks or mated wedges carefully applied should support the "ends" of your casting such that you can get a strap clamp of some kind (probably with some packing alignment stuff) to clamp the unit down onto the jacks or wedges. A C-clamp (G-cramp -- to those on the other side of the pond) will hold things to your angle plate. Assuming that the other side of the casting does not have a nice flat surface, use an endmill (slot drill -- to those on the other side of the pond) to estabalish a spotface slightly larger than the hole you need to drill. The rest should be simple -- if my assumptions are correct... |
| MadNick:
Thanks Lew, I would have loved a diagram to see how that would work, my minds eye was struggling a bit. Thanks for all the comments, heres how I did it in the end - Worked a treat......so far! Nick |
| krv3000:
good job |
| Navigation |
| Message Index |
| Next page |
| Previous page |