Re: [CAD_CAM_EDM_DRO] Re: Is there a comparison between milling machines and software?

Your welcome...I'm looking into the MaxNC15 at the moment.
I plan on going down and visiting the dealer to see if it will do what I
want it to do before making a firm decision this time.

I can save the Roland machine for other small art type projects I have in
mind..nothing in wax though!

Smoke

>Hello Gordon:
>
>Thanks for that bit of information. That is very
>helpful in making my mind up on the right milling
>machine.
>
>
>Mprogee
>--- Smoke <gordonr@...> wrote:
>> I don't know anything in the way of comparisons but
>> I do know from
>> experience on my Roland MDX machine that Rolands
>> software generates a huge
>> machining file which creates a lot of un-necessary
>> motion. I know this just
>> from watching the machine machine over the same area
>> several times machining
>> air on the second and subsquent passes.
>>
>> I also know that on this machine it is terrible for
>> cutting wax as the
>> spindle speed is way to high for this material and
>> is non-adjustable.
>>
>>
>>
>> >--- In CAD_CAM_EDM_DRO@y..., mprogee@y... wrote:
>> >> Hello:
>> >>
>> >> Has anyone had experience comparing actual speeds
>> milling 3D
>> >objects
>> >> with the range of milling machines under $5000? I
>> am trying to
>> >> determine how long it would take to mill a 3D
>> object like the
>> >> examples on the Roland website
>> >>
>>
>http://www.rolanddga.com/products/3d/combo/mdx15/mdx15_features.asp
>> >> (3D Max head, Lightwave cow) using other CNC
>> mills such as:
>> >
>> >For those kinds of models you might also want to
>> consider a benchtop
>> >router, rather than a milling machine. Unless you
>> plan to make the
>> >part from metal, the routers are accurate enough to
>> be visually
>> >acceptable, but will not machine a tight fitted
>> machine clearance.
>> >
>> >The Shopbot benchtop is about $5000 and I believe
>> that it will rapid
>> >at 180+ ipm, and can probably cut most wood and
>> plastic at speeds of
>> >around 60-120 ipm.
>> >
>> >If you have access to software that will either
>> calculate the length
>> >of the tool path or a simulation program like meta
>> cut view, they
>> >will tell you how long the cuts will take, at the
>> various machines
>> >cutting speed. Vector Cam can backplot a G-code
>> file of the cutting
>> >path and then calculate the cut time.
>> >
>> >One thing to bear in mind if doing ANY comparison
>> to the Roland
>> >machines, they are built similarly to printers.
>> There is not much
>> >strength in the frame, the spindle mount, the
>> spindle bearings, or
>> >the axis drive motors. I have never heard from any
>> Roland customer
>> >that had successfully and satisfactorily machined
>> metals, and even
>> >plastics are problematic for some. Wax seems to be
>> the preferred
>> >material.
>> >
>> >I didn't answer your question, but maybe I helped
>> you in your quest
>> >for information.
>> >
>> >Best Regards,
>> >
>> >Fred Smith
>> >IMService
>> >
>> >
>> >
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