Shapeoko Machine capabilities and limitations

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tomb18
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Re: Shapeoko Machine capabilities and limitations

Post by tomb18 » Mon Jan 18, 2016 4:06 am

Yes, Ive done a lot of checking for the out of square condition but have not been abe to track it down. Anyways, if it was out of square, wouldn't the x and y directions be wrong too?

WillAdams
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Re: Shapeoko Machine capabilities and limitations

Post by WillAdams » Mon Jan 18, 2016 4:13 am

Does it happen at a drill point?
Shapeoko 3XL #0006 w/Makita RT0701 Router w/0.125″ and ¼″ Elaire precision collets
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AnonymousPerson
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Re: Shapeoko Machine capabilities and limitations

Post by AnonymousPerson » Mon Jan 18, 2016 4:51 pm

sgth0mas wrote:But again, thats only based on my intended use. For hobbyists and model makers, i would imagine repeatable tolerances arent king.
Yeah, for me the tolerances are quite fine, as I'm only experimenting with things and doing general concept work.

The biggest issue for me presently is the very limited work area. Making that bigger would be the best "upgrade", though I'm not sure that's really a "Shapeoko Pro" thing. ;)

In the meantime, the lack of upgrade is providing motivation for me to learn how to make my own CNC machine... but I probably would have done that anyway. :D
Shapeoko 3 #516

WillAdams
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Re: Shapeoko Machine capabilities and limitations

Post by WillAdams » Mon Jan 18, 2016 5:08 pm

Yeah, it's unfortunate that the expansion has been so delayed --- I'm hoping that the recent collaborative vacuum board means that things such as the expansion kit have also been worked on, and looking forward to them. (I've got a bunch of lumber cluttering up my house which is too long to use on the stock SO3).
Shapeoko 3XL #0006 w/Makita RT0701 Router w/0.125″ and ¼″ Elaire precision collets
Nomad 883 Pro #596 (bamboo)

samc99us
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Re: Shapeoko Machine capabilities and limitations

Post by samc99us » Tue Jan 19, 2016 12:20 pm

Trouble with expanding the machine, at least in the gantry direction and z-axis, is reduced stiffness. I am a little surprised that y-axis upgrades aren't available for the SO3.
Modified Shapeoko 2: 1500mm fully supported y-axis, 1000 mm 4060 x-axis, ACME Belt Drive Z-axis, Dewalt DNP611, full aluminum t-slot table, 4x NEMA23 180 oz/in stepper motors driven by a G540

samc99us
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Re: Shapeoko Machine capabilities and limitations

Post by samc99us » Tue Jan 19, 2016 12:40 pm

tomb18 wrote:So here is an example of what can be done with a machine of this caliber.
I am new to machining having received my Shapeoko about 2 months ago. Since then I've leaned a bit of CAD, some CAM and spent some serious hours making the shapeoko as good as it can get..
Here is my first job:

There are 9 units here, each which use three pieces of aluminum 0.25" thick. The gears that you see are 5.7" diameter 90 tooth XL profile pulleys. They take around 3 hours each to machine.
Now, for my application, the Shapeoko is perfectly adequate and is reproducible. All that was done between pieces was to vacuum. All pieces are within +- 0.005" of each other.
That being said, all round pieces or holes have one diagonal, only one where the diameter is 0.015" larger than all the other diameters! The X and Y dimensions of the circles are perfect. It;s only one diagonal. Try as I might, I can't find why.
However, it really depends what the final result is. The project overall is a hardware / software device that rotates a CCD camera on high end telescopes. It rotates the camera as needed at a maximum speed of 1 rev every 4 minutes. No high speed, no high accuracy needed. Without actually taking out the calipers you would be hard pressed to see any imperfections. So for my needs, the shapeoko fits the bill.
Other than the error in the diagonal and the carbide 3D software, it's a great value at $1000.
Tomorrow I receive a real t-slot aluminum plate 16" x 20" and milled flat to .004 / 8". We'll see if this improves lettering abilities.
20160115_124406_resized_1.jpg
That is some very nice looking work. Stock SO3 I take it?
Modified Shapeoko 2: 1500mm fully supported y-axis, 1000 mm 4060 x-axis, ACME Belt Drive Z-axis, Dewalt DNP611, full aluminum t-slot table, 4x NEMA23 180 oz/in stepper motors driven by a G540

tomb18
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Re: Shapeoko Machine capabilities and limitations

Post by tomb18 » Tue Jan 19, 2016 9:47 pm

Yup, stock SO3.
Today though I added a real machined t-slot table from ebay. Expensive but +/- 0.003 across the whole table as measured with a dial indicator mounted to the gantry.
Should make a difference!

WillAdams
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Re: Shapeoko Machine capabilities and limitations

Post by WillAdams » Tue Jan 19, 2016 10:02 pm

Interesting --- standard part, or one-time bargain?
Shapeoko 3XL #0006 w/Makita RT0701 Router w/0.125″ and ¼″ Elaire precision collets
Nomad 883 Pro #596 (bamboo)

tomb18
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Re: Shapeoko Machine capabilities and limitations

Post by tomb18 » Tue Jan 19, 2016 11:44 pm

standard part I think.
It's this one:"
http://www.ebay.com/itm/T-Slot-plate-20 ... SwwbdWMd4G

Like I said , expensive

WillAdams
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Re: Shapeoko Machine capabilities and limitations

Post by WillAdams » Wed Jan 20, 2016 12:55 am

Looks like a really good value to me, and if I weren’t set on upgrading to a wider machine and keeping my machine man portable, I'd be looking up my Paypal account now.

There’s a 24" length available as well, wish there was a 36"
Shapeoko 3XL #0006 w/Makita RT0701 Router w/0.125″ and ¼″ Elaire precision collets
Nomad 883 Pro #596 (bamboo)

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