Mr. JwC's eShapeoko [Pre-Build]

mrjwc
Posts: 12
Joined: Sun Jun 16, 2013 3:20 pm

Mr. JwC's eShapeoko [Pre-Build]

Post by mrjwc » Tue Apr 22, 2014 8:25 pm

This will be the first post on the board for me. I've been lurking here on and off for the last few years while planning my build and I've finally decided it's time to start building.

Quick introduction: I'm an engineer with a love for electronics and mechanics even though I studied IT. I frequently come up with ideas for things I should build, but the limiting factor has always been my patience and the lack of proper tools. When I've, despite my situation, started a woodworking project I've always ended up frustrated because the dimensions and angles weren't perfect and that made assembly more difficult. I'm hoping a nice Shapeoko will aid me greatly in my projects in the future.

I'm hoping to be able to cut/mill MDF/Fiberboard and PCBs to start off with.

Here's my current shopping list. I haven't ordered any of the items below just yet, so if any of you have some input please speak up :)
Regarding the aluminium spacers, will they put a lot of wear on the makerslides? Should I wait and buy the hard anodized makerslides instead?
I like to do things like this properly, but the question is; am I being too ambitious?
Maybe the Nema23s are overkill? If so, this in turn means the stepper drives might not be needed and I could instead go for a grbl setup.

Any thoughts and/or suggestions regarding the build will be greatly appreciated.

Replaced

[May 10 update]
Everything is now ordered and I've already received the steppers and PSU, a 1/8" reducer for the router and quite possibly the router itself (I've got a package still at the post office).

Also ordered some PCB micro drill bits, 0.1mm 20° engraving bits and copper clad boards from eBay so I have something to work with once I get all the parts for the machine itself. Also need to buy some end mills soon.
Last edited by mrjwc on Fri May 16, 2014 4:54 pm, edited 6 times in total.

cvoinescu
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Location: Camberley, UK
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Re: Mr. JwC's eShapeoko

Post by cvoinescu » Tue Apr 22, 2014 8:57 pm

The aluminium spacers don't come in contact with the MakerSlide. They contribute a lot to the rigidity of the X carriage, which is a good thing. The V-wheels are still plastic -- the hard anodized MakerSlide needed for steel V-wheels is still a month or so into the future, unfortunately.

I think you're going overboard with those NEMA23 motors. There's hardly any benefit from any motor bigger than a 51 mm NEMA23 (say, 0.9 or 1 N m). You'll be able to break, strip or unclamp the belt with that X motor, but it won't make the machine better, in my opinion. :) Also, I'm personally against a NEMA23 motor on the Z axis, because a good NEMA17 will do the job just fine. If you must put a NEMA23 there, go for a small one.
Proud owner of ShapeOko #709, eShapeOko #0, and of store.amberspyglass.co.uk

mrjwc
Posts: 12
Joined: Sun Jun 16, 2013 3:20 pm

Re: Mr. JwC's eShapeoko

Post by mrjwc » Tue Apr 22, 2014 9:06 pm

Thanks a lot for your input! The reason I was thinking big was because of possibly purchasing the heavy Chinese spindle in the future. (They weigh in at around 6kg if I remember correctly)
Will a Nema17 for the Z be able to cope with that kind of weight?

I'll look into some smaller 23s and see what I can find.

cvoinescu
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Re: Mr. JwC's eShapeoko

Post by cvoinescu » Tue Apr 22, 2014 11:02 pm

mrjwc wrote:Thanks a lot for your input! The reason I was thinking big was because of possibly purchasing the heavy Chinese spindle in the future. (They weigh in at around 6kg if I remember correctly)
Will a Nema17 for the Z be able to cope with that kind of weight?
I'm not sure it will cope -- but I don't think the rest of the machine will cope with a 6 kg spindle either. 2 kg is already pushing it.
Proud owner of ShapeOko #709, eShapeOko #0, and of store.amberspyglass.co.uk

mrjwc
Posts: 12
Joined: Sun Jun 16, 2013 3:20 pm

Re: Mr. JwC's eShapeoko

Post by mrjwc » Fri Apr 25, 2014 11:15 pm

Updated shopping list with more reasonable steppers and drivers etc

mrjwc
Posts: 12
Joined: Sun Jun 16, 2013 3:20 pm

Re: Mr. JwC's eShapeoko

Post by mrjwc » Mon May 12, 2014 5:28 pm

I've now received a few packages:
web_steppers_psu.jpg
Steppers & PSU from omc-stepperonline.com (Super fast shipping)
web_steppers_psu.jpg (124.07 KiB) Viewed 3823 times
web_3.175mm-reducer.jpg
6mm - 1/8" reducer
web_3.175mm-reducer.jpg (99.23 KiB) Viewed 3822 times
web_caucau850w.jpg
Cau Cau 850w spindle from eBay
web_caucau850w.jpg (140.9 KiB) Viewed 3822 times
Last edited by mrjwc on Mon May 12, 2014 5:30 pm, edited 1 time in total.

mrjwc
Posts: 12
Joined: Sun Jun 16, 2013 3:20 pm

Re: Mr. JwC's eShapeoko

Post by mrjwc » Mon May 12, 2014 5:30 pm

web_DSC_0189.jpg
The Cau Cau weighs in at 1600 grams
web_DSC_0189.jpg (108.47 KiB) Viewed 3821 times

Philip
Posts: 16
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Re: Mr. JwC's eShapeoko

Post by Philip » Mon May 12, 2014 5:44 pm

Curious what the runout on that spindle is, it's very cheap.

mrjwc
Posts: 12
Joined: Sun Jun 16, 2013 3:20 pm

Re: Mr. JwC's eShapeoko

Post by mrjwc » Mon May 12, 2014 5:48 pm

Philip wrote:Curious what the runout on that spindle is, it's very cheap.
It is, unfortunately I haven't got the tools to measure the runout (yet at least), so I'll just have to see how it performs when I finish up my build and start cutting.
I'm possibly looking to upgrade to a chinese spindle in the future so I didn't want to spend almost 200€ on a branded spindle at this point.

mrjwc
Posts: 12
Joined: Sun Jun 16, 2013 3:20 pm

Re: Mr. JwC's eShapeoko

Post by mrjwc » Wed May 14, 2014 6:31 pm

Received the drivers yesterday, they're tinier than I imagined :)
web_drv8825.jpg
DRV8825 Drivers
web_drv8825.jpg (109.38 KiB) Viewed 3756 times

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