Posted by Geoff Theasby on 08/03/2017 15:19:32:
John S,
I was referring to hobbyist CNC users.
Geoff
.
Geoff, same criteria still applies.
Ketan at ARC sells the turnkey KX1 and KX3 milling machines which are meant for hobby use as opposed to small production work although some do get used for that.
As I was heavily involved with these machines with both Sieg and ARC I often get called on to deliver and install a machine.
Usually this is because the buyer is elderly or suffers from a medical problem that stops then handling a heavy machine.
Often it's because the shed or workshop is at the end of a garden up 19 steps and 5 flower beds.
The vast majority of these users only have this one mill so they have no previous knowledge of manual milling.
Many are newly retired from a non industrial job, like office work where they are very familiar with computers but not machining.
As part of the install they also get a few hours tuition and the manual for the machine which was written in house gives them a couple of examples to do. One is the Sieg Logo were anyone with a piece of MDF and an engraving cutter or centre drill for that matter can produce their first part, and they all do just that.
I accept it's a different learning curve but it the owner knows no different then it just replaces the learning curve they would have had on a manual machine but with some of the pitfalls removed like a constant feed so they don't jerk and break cutters.
I am not saying that CNC is the be all and end all as I know it isn't, I work full time at jobbing engineering and probable use a CNC less than 10% of the time but when it is used it really saves time.
All I want to do is debunk the oft quoted saying that you need to manual mill before you can CNC mill. The truth is there is no truth at all behind that statement. For a start the machines are so different. A KX1 can run the spindle with a small cutter at 7,000 rpm whereas something like an X3 tops out at 1900 revs so how can you even compare speeds and feeds between these to machines ?