Re: [multimachine] Re: Time for a new project?
- in india, even today, you get knife sharpners who lug around a frame mounted, modified cycle wheel (with the tyre removed). they go round house to house, sharpening knives and scissors.will try and take a picture and post it to the group.umashankarOn Mon, Mar 25, 2013 at 11:11 PM, pokerbacken <email@example.com> wrote:
As for toolgrinder, I am working with a simple threadlepowered one.
I plan on utilizing anglegrinder wheels, they are cheap and can take quite a bit of abuse without breaking.
sadly progress just now is non existent, main reason is that my workshop is now under 1.5m of snow...
I am aware that treadle power is not perfect but a basic grindingwheel can, with a few simple jigs, grind both drillbits, lathebits and other tools for not much money and little effort.
when building this I actually use mainly wood and basic techniques and simple tools.
I made the flywheel out of a log section axle was a piece of waterpipe and so on, the treadle frame was some leftover wood held together with wedged dowels or wedged mortice-tennon...
- Up to now the focus of this forum has been to enable people in third world countries to acquire the machinery and the skills to learn and produce mechanical parts themselves and to a great extent I feel Pat that with the assistance of other members of the group you have succeeded in that endevour. Having said that I also feel that taking on a CNC project would take this group in a direction 180 degrees from that focus. I don't see that as a bad thing, it is what it is. From my experience of a decade ago in the printing machinery industry many third world economies intentionally shunned printing presses with the automation because they couldn't work on them themselves and outside technicians are very expensive for them to bring in. For much the same reason a CNC project may not be of much interest to them even though the technology level has increased also.
As for myself I'm very interested in a CNC project as we are planing to build one for our hobby shop in the coming year. The yahoo group DIY-CNC is also a good group for reference.
On 3/24/2013 10:55 AM, Pat Delany wrote:I guess what I am looking for is a way to use steel plate and concrete to build a practical CNC lathe and/or mill frame.
From: teeth_o_the_dragon <charles.dragonteeth@...>
Sent: Sunday, March 24, 2013 7:19 AM
Subject: [multimachine] Re: Time for a new project?
I usually just Lurk on here, I rarely have time to actually DO anything, but the possibility of converting a simple "multimachine" type tool to CNC is what attracted me in the first place.
Look at projects like "RepRap" for some really well documented descriptions of the electronics required. I think they use Arduino, but RaspberryPi should also be able to do the job. and at much less than the $600+ you mention.
One day, one day..
> Could a slow CNC machine be built from our box ways, concrete, engine blocks and small steppers that could be geared down with timing belts?