27-10-2012, 10:27 AM
Hi,
Many thanks David for adding this most interesting video. I've seen a big CNC router in action before at Central Woodworking here in Huddersfield. Central used to sell these routers costing I think around £10K over twelve years ago but I think these only did 2D work and the company went out of business.
It would be fun to have a go at making a similar knob using my lathe and drill press. The drill press would bore the hole for the metal insert bush the bush having been turned on the lathe and bored through.
Next would be to drill and tap for the grub screw. The usual knob spindle diameter is 1/4" so now a short length of 1/4" rod could be secured into the blank by means of the grub screw and the blank mounted in the three jaw on the lathe and roughed down.
A drilling template made from steel could be made up and with an indexing arrangement the flutes could be added using the drill press. A bit more thought would be required to finish the knob in rounding over the edges of the flutes but I reckon a good copy could be produced on basic machinery.
I don't wish to detract from the versatility of these 3D CNC machines as the technology is wonderful but I'm merely thinking aloud how I would perhaps go about producing such knobs with my own equipment.
I love these sort of projects; the materials cost very little but many happy hours can be spent tinkering around whilst resolving the problems. Other materials can also be used such as alternative ivory.
It is such projects that has decided me into buying the Jubilee lathe which I hope to spend quite a bit of time on this winter; once the lathe is upgraded which I'm currently doing then I'm interested in adding an "overhead" this being a remote belt drive to power tooling allowing all manner of patterns and shapes to be added to turned work which is indexed between centers. Patterns like "barley twists" can be added with a router in fact such a machine used to be sold years ago which I believe was called a router crafter; it might still be on sale?
I've been addicted to lathes since the age of 15; so after 50 years I doubt a cure will be found. Rob and Joe are also now two more victims of lathe addiction; sorry guys there still is no known cure. (David has had his lathe for a long while so is already an hopeless case as is Big Al).
How do you manage to resist the urge to dash out and buy a lathe Gary; you would have endless fun if you did and with a bit of practice you would amaze yourself; take Joe as an example; Joe is turning top class pens like a professional and I'm sure Joe is now fully addicted to lathe work. We are all lost causes.
Kind regards, Col.
Many thanks David for adding this most interesting video. I've seen a big CNC router in action before at Central Woodworking here in Huddersfield. Central used to sell these routers costing I think around £10K over twelve years ago but I think these only did 2D work and the company went out of business.
It would be fun to have a go at making a similar knob using my lathe and drill press. The drill press would bore the hole for the metal insert bush the bush having been turned on the lathe and bored through.
Next would be to drill and tap for the grub screw. The usual knob spindle diameter is 1/4" so now a short length of 1/4" rod could be secured into the blank by means of the grub screw and the blank mounted in the three jaw on the lathe and roughed down.
A drilling template made from steel could be made up and with an indexing arrangement the flutes could be added using the drill press. A bit more thought would be required to finish the knob in rounding over the edges of the flutes but I reckon a good copy could be produced on basic machinery.
I don't wish to detract from the versatility of these 3D CNC machines as the technology is wonderful but I'm merely thinking aloud how I would perhaps go about producing such knobs with my own equipment.
I love these sort of projects; the materials cost very little but many happy hours can be spent tinkering around whilst resolving the problems. Other materials can also be used such as alternative ivory.
It is such projects that has decided me into buying the Jubilee lathe which I hope to spend quite a bit of time on this winter; once the lathe is upgraded which I'm currently doing then I'm interested in adding an "overhead" this being a remote belt drive to power tooling allowing all manner of patterns and shapes to be added to turned work which is indexed between centers. Patterns like "barley twists" can be added with a router in fact such a machine used to be sold years ago which I believe was called a router crafter; it might still be on sale?
I've been addicted to lathes since the age of 15; so after 50 years I doubt a cure will be found. Rob and Joe are also now two more victims of lathe addiction; sorry guys there still is no known cure. (David has had his lathe for a long while so is already an hopeless case as is Big Al).
How do you manage to resist the urge to dash out and buy a lathe Gary; you would have endless fun if you did and with a bit of practice you would amaze yourself; take Joe as an example; Joe is turning top class pens like a professional and I'm sure Joe is now fully addicted to lathe work. We are all lost causes.
Kind regards, Col.
Happiness is a wreck of a cabinet to restore.
