Managed to get access to a bridgeport type machine to do work on the Z Axis. Almost done, need to do a fair bit of tapping and will then assemble.
Managed to get access to a bridgeport type machine to do work on the Z Axis. Almost done, need to do a fair bit of tapping and will then assemble.
Ok, cleaned up a bit, removed the reference table, mounted the main table and did a quick test fit of the Z Axis bottom part.
The naked machine
Some bits on it
Z axis, ballscrew is just 'hanging' onto the overhang, not mounted. The Z axis needs some of the holes to be drilled all the way through and I need to find the location of the bottom carts. I did not have the measurement at hand when I machined the holes on the larger mill. As these are not threaded, I have a bit of margin for error.
THANKS for the updates. You're making great progress and it looks quite impressive!!
CAD, CAM, Scanning, Modelling, Machining and more. http://www.mcpii.com/3dservices.html
Ive not been good at keeping this thread up to date. The UK Mycnc thread has been kept up to date.
Thor works, busy tweaking etc but some info here:-
"Suppose this means it works.
Speeds and Feeds
24000 rpm - 6mm endmill
Cutting Rate 4000mm/min
Lead / Ramp at 1440 mm/min
This was run at 80% speed. Overall happy with the cut considering there is no finish pass.
DOC is 5mm, WOC is 1.2mm
Still got more to do, but happy with the initial results.
"
Are you serious? After all that work you will cut with crapy chinese spindle?
Install some kind of BT 30 spindle with timing pulley and servo motor to rotate it. Much, much better choise for reasonable money.
I did look at this. I couldnt find anything I was willing to part money for. The cheapest I could find was around $1500 upwards to around $4K. Servo power, I am limited to around 1.5KW (using Panasonic), however I could look at other makes.
Ill just make the best use of this spindle until I can afford an upgrade to an all in one unit.
Amazing machine.
What are your final thoughts on concrete with super plasticiser?
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Thanks.
Are you able to compare concrete+plasticizer with epoxy granite? On strength, vibration etc. Actually what I want to understand is how much the plasticiser makes the concrete softer and as a result how much the concrete gets flex.
So Thor has had a bit of an upgrade / make over.
Spot the difference.
That was courtesy of my previous machine (Denford Triac).
Looking forward to getting the HSD 6.8KW 24K RPM spindle working 100%, hopefully this weekend I can do some test cuts. Ive only got a few toolholders / collets but will sort that out once I am confident that this works OK.
Hi Chaza - How is your mill going? Any long term observations? I'm looking at doing a benchtop concrete mill. Did you use Portland cement? I'm going to use CSA cement. Regards Peter