Megesh's Build

megeshg
Posts: 91
Joined: Sat Mar 22, 2014 6:08 pm

Megesh's Build

Post by megeshg » Mon May 19, 2014 1:27 pm

Hi All...

A quick introduction, i have been into CNC for close over 3 years now. I have been following the trends and looking at build ideas and just playing around looking to build a cost effective unit. Living in South Africa has caused a lot of issues where a lot of parts had to be imported, which i was trying to avoid. I have been a follower on CNCZone and gained a lot of knowledge from there and started tinkering with a drawer slider based unit. This was a disaster and then i moved onto a wooden design, using parts from designs i saw online i attempted to build a small unit which could mill PCB, i got it going with alu angle and steel bearings but found cutting the wood to precise size and drilling holes that lined up well wasn't working and thus i canned the idea. I played around with normal threaded rod and then tried belted solutions. Each with its pros and cons.

I stumbled on the Shapeoko 1 awhile back and it got quite a negative feeling on the CNCZone, and thus i didnt think much about it, but then i saw what the guys were doing with Shapeoko 2 and the design changes got me really interested! Ever since i have been following this forum everyday! I mainly read and dont post much.

Well onto my build. I decided to go with the shapeoko cause its certainly more rigid than a wood build and took the plunge and started importing parts! Should have done this earlier when the exhcange rate was better :roll:

I decided to only import parts i could have made or source here. So i got Steel wheel, gt3 belting and pulleys, eccentric nuts and smooth idlers from openbuilds. I then had the plates laser cut locally out of 3mm mild steel. I had been given an extrusion set, its a set used to mount solar geysers on roofs. This was the spark to my Shapeoko journey actually. I had a local engineering company make me the steel v guides. This was so far the hardest part.

I then made some changes to the shapeoko design to work with the 40x40 extrusion and given the fact that i could not bolt the carriages directly to the extrusion. So far i have a rough frame put together with a lot work still to come. Will let the pictures explain the rest.
Attachments
20140518_190952.jpg
end plates
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Y Carriage
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20140518_190930.jpg
rough frame put together
20140518_190930.jpg (85.44 KiB) Viewed 2413 times

megeshg
Posts: 91
Joined: Sat Mar 22, 2014 6:08 pm

Re: Megesh's Build

Post by megeshg » Mon May 19, 2014 1:28 pm

4th pic...

Only allowed 3 per a post
Attachments
20140518_191016.jpg
Steel wheels
20140518_191016.jpg (64.5 KiB) Viewed 2413 times

megeshg
Posts: 91
Joined: Sat Mar 22, 2014 6:08 pm

Re: Megesh's Build

Post by megeshg » Fri Jul 11, 2014 1:18 pm

Been slow going but getting there...
Attachments
20140711_080444.jpg
mock up with motors
20140711_080444.jpg (300.29 KiB) Viewed 2174 times

megeshg
Posts: 91
Joined: Sat Mar 22, 2014 6:08 pm

Re: Megesh's Build

Post by megeshg » Mon Jul 21, 2014 10:27 am

while i wait for more parts to be laser cut, i started looking at the electronics. Alot of people have mentioned thermal shutdown, so i decided i needed to ensure my drivers where cool.

So i mounted them to a heat sink. The big easy drivers have a thermal pad at the bottom which helps dissipate heat, so i used this and attached a heat sink to ensure better heat dissipation.
Attachments
20140720_175209.jpg
pcb mounted
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pcb mounted with grooves for solder points
20140720_175202.jpg (269.72 KiB) Viewed 2099 times

megeshg
Posts: 91
Joined: Sat Mar 22, 2014 6:08 pm

Re: Megesh's Build

Post by megeshg » Mon Aug 11, 2014 7:21 am

mocked up the z-axis
Attachments
20140807_201138.jpg
mock-up z-axis 2
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mock-up z-axis 1
20140807_201130.jpg (373.2 KiB) Viewed 1997 times

megeshg
Posts: 91
Joined: Sat Mar 22, 2014 6:08 pm

Re: Megesh's Build

Post by megeshg » Tue Sep 02, 2014 1:38 pm

Busy with electronics enclosure...
Attachments
20140902_080116.jpg
adding motor connectors
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20140902_080107.jpg
busy with wiring
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briankb
Posts: 7
Joined: Fri Apr 18, 2014 10:47 pm

Re: Megesh's Build

Post by briankb » Thu Sep 04, 2014 7:55 pm

Looks great! I picked up some used 40x40 at a surplus store a few months ago. I was going to use it to make an enclosure but I see you are using it and would love to give it a try as the larger version of a CNC to cut foam and sheet goods.

What are those corner pieces you are using to lock it into place and make, what appears to me, a good and accurate square?

How are your guide bearing riding along the 40x40 rails? Could you take close-up picks of that area?

megeshg
Posts: 91
Joined: Sat Mar 22, 2014 6:08 pm

Re: Megesh's Build

Post by megeshg » Fri Sep 05, 2014 10:31 am

briankb wrote:Looks great! I picked up some used 40x40 at a surplus store a few months ago. I was going to use it to make an enclosure but I see you are using it and would love to give it a try as the larger version of a CNC to cut foam and sheet goods.
Yeah i also got handed this set so it was perfect to build my machine around.
briankb wrote:What are those corner pieces you are using to lock it into place and make, what appears to me, a good and accurate square?
They are relatively accurate, and also have a centering tab which lines up with the channel in the profile. Prior to tightening i ensure they square with a set square

briankb wrote:How are your guide bearing riding along the 40x40 rails? Could you take close-up picks of that area?
They are riding on a 5mm thick stell plate that has the edges grinding at a 90 degree and have holes drilled along the center line to mount to the extrusion. This was one of the most expensive parts of the build since i had to have engineers make this for me.

megeshg
Posts: 91
Joined: Sat Mar 22, 2014 6:08 pm

Re: Megesh's Build

Post by megeshg » Tue Dec 23, 2014 2:35 pm

So my machine i sup and running, and i have made a few things...

Its not perfect but good enough for making a few trinkets.
Attachments
20141217_200528.jpg
3d puzzle
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star wars fan
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My sons name
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megeshg
Posts: 91
Joined: Sat Mar 22, 2014 6:08 pm

Re: Megesh's Build

Post by megeshg » Tue Dec 23, 2014 2:36 pm

one more pic
Attachments
20141218_221104.jpg
my god son, into karate
20141218_221104.jpg (338.13 KiB) Viewed 1510 times

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