Thread: Found a new machine on eBay
Was looking on ebay for the other day for cnc machines and came across this http://www.q-gee-graphics.co.uk/MDF_...0_5867758.aspx
Has anyone got any experience of this company and what are your thoughts on its capability as a small hobby machine for just using at home?
Last edited by Lee Roberts; 22-04-2012 at 11:28 PM. Reason: fixed link
There are a couple of threads over on cnczone.com about q-gee graphics that you might want to read. A couple of unhappy buyers.
Last edited by tumutbound; 06-03-2012 at 12:33 AM.
We have just bought the same machine.
How did you connect the motors to the plastic frame. I mean mounting wise? We didnt buy the mounts due to having a budget.
Check out our thread if you have time, we're after all the help we can get :tup:
Adam, Alan, Josh, Steve, Mike.
What do you want to make with the machine?
I tried to go up and have a look at their premises which just looks like a house, but i was advised that they were just moving and it would not be possible. I wonder if they've finished their move and it's possible to view something. I'll chase that one up, as i live about 20 miles from them.
Hmmm... I'm not too convinced. I see your point with un-supported rails etc.
But (and this is where we're going to get a bit geeky with our engineering here lol) the rails are 350mm long and 16.0005mm diameter, we're guessing their toughened steel. Meaning the Transverse loading weight (which would actually have to be made by the machine it's self, unless you are putting something heavy on the machine) would have to be 96kilo's per 100mm to get a flex of <1mm. devided by the 350mm rail length would mean an actuall transverse loading of 27 kilo's from the part that moves back and forth (Y axis?) and even more on the side to side axis as it is only 300mm (32kg-<1mm)
We couldnt find any stats on the density of the HDPE frame it's self that we have.
But the way the machine is setup, from what we can see all the "shear" strength is taken by the rails.
Given that the distance between the rails on the weakest part of the machine, the side to side (it's the weakest as the most energy is being put there when in motion and cutting) is 80mm, and the risen height from the bed (the place where the force is generated) is 100mm, theres a good ratio for ultimate strength.
It hasn't been used yet, but a simple (by pushing it with an arm) the uniaxial compression from the top right of the machine on a 45 degree angle is pretty solid with no flex up until about 15 kilos.
If i could remember the formular to workout what kind of force in kg that would be at the cutting edge then i would let you know.
We only have to PCB engrave with it ayway, so by rights a machine made from cardboard would probably be strong enough lol.
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