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  #481  
Old Sun 15 January 2012, 15:24
sailfl
Just call me: Nils #12
 
Winter Park, FL
United States of America
Modifications to my machine.

Friday, I started making modifications to my machine.

I have had the original spoilboard on the machine when I finished building it in 2008. My machine support board is 61" x 121" (1524 mm x 3073 mm). The spoilboard had a hole in it about 3/4 of the way back from the front. Plus I wanted to add vacuum hold down so this was the time to do both.

I removed the old spoilboard and discovered that I did not do a very good job of glueing down the 3/4" MDF. You can see from the first photo there are not many places that the spoilboard was attached.

For the new spoilboard, I purchased a 0.75" x 60" x 144" piece of Trupan Ultra Light MDF. I only found one place in the Orlando area that carried the larger sheet of MDF. I needed the Ultra Light MDF to use with the vacuum hold down.

I cut 5 holes through the support board for the tubing for the vacuum hold down and my 5 zones that I will have. Unlike many people, I cut the vacuum hold down grid in the bottom of the spoilboad.

I believe I did a better job of glueing the new spoilboard down and I will now order the Lighthouse Vacuum Motors that I am going to use for the hold down.

I will post more pictures as I progress with the vacuum hold down and other modifications that I will be making in the next months.
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File Type: jpg DSCN1402.JPG (85.2 KB, 1427 views)
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  #482  
Old Sun 15 January 2012, 17:35
smreish
Just call me: Sean - #5, 28, 58 and others
 
Orlando, Florida
United States of America
Nils,
I like what I see! Nice.
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  #483  
Old Sun 15 January 2012, 18:26
bolingerbe
Just call me: Bryan #54
 
Clinton(Tennessee)
United States of America
Very impressive Nils, please post pictures and information on your vacuum motor setup. I have been doing some research and purchased some vacuum motors for a portion of my table.
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  #484  
Old Sun 15 January 2012, 21:12
KenC
Just call me: Ken
 
Klang
Malaysia
Nice job! I cut the vacuum grid on the bottom side of the spoil board too
& I use conventional MDF with plenty success
BTW, zoning the table is unnecessary. just cover enough of the unused surface of the spoil-board is ample freedom for managing the vacuum pressure.
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  #485  
Old Sun 15 January 2012, 23:01
sailfl
Just call me: Nils #12
 
Winter Park, FL
United States of America
Thanks Sean and Bryan

Ken,

Thanks for your input.

I used zones because I wanted to manage the pressure with the zones. That is another reason I put the grid on the bottom side of the spoilboard. If my design is wrong or I want to change it from what I learn, it is easy to change.

The ultra light MDF is more porous which should provide better hold down. The Trupan is even more porous than regular ultra light. The dust from the Trupan was much finer and lighter.

At this point, I want to use 2 Lighthouse motors and I am going to build some kind of enclosure for the motors to help contain the noise.

I will post pictures and info as I build.
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  #486  
Old Mon 16 January 2012, 04:10
KenC
Just call me: Ken
 
Klang
Malaysia
I contain the noise with a pair of ear plugs
Vacuum will leak through the spoil-board & since its a whole piece, there are no way to avoid it. The leak is significant even with normal MDF.
To manage your vacuum effectively with multi-zone, each zone should be of individual grid/spoil board with all the edges sealed with varnish/lacquer/shellac.
Trust me. a single zone is all you need but there are no harm having a go at multi zone.
To me Less-is-more with a single zone less work, less valve, less piping, more flexibility
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  #487  
Old Mon 16 January 2012, 07:36
sailfl
Just call me: Nils #12
 
Winter Park, FL
United States of America
Ken,

I am using epoxy between zones. I appreciate you suggestions but I gotta be me......
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  #488  
Old Mon 16 January 2012, 19:54
KenC
Just call me: Ken
 
Klang
Malaysia
I have no problem with that.
Just another caution, it is very important to seal the edges, I lost about about 1inHg through poorly sealed edges which is a lot when you need it.
BTW, do you use sealing foam gasket between the spoil board & the base board? There are always leaks at this joint without the sealing gasket.
I would be most interested in your noise solution
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  #489  
Old Tue 17 January 2012, 01:47
Regnar
Just call me: Russell #69
 
Mobile, Alabama
United States of America
Looking good Nils!
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  #490  
Old Wed 01 February 2012, 04:59
sailfl
Just call me: Nils #12
 
Winter Park, FL
United States of America
MechMate owner and Aspire user makes the Vectric Newsletter Issue 26 with the highlight of NBA All-Star logo.
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  #491  
Old Wed 01 February 2012, 05:21
Regnar
Just call me: Russell #69
 
Mobile, Alabama
United States of America
I saw that yesterday. Congrats.

Anymore work done on your vacuum table?
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  #492  
Old Wed 01 February 2012, 11:24
sailfl
Just call me: Nils #12
 
Winter Park, FL
United States of America
I have the new spoilboard with the grid and I am now working on the box to hold the vacuum motors. I have the electric worked out.
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  #493  
Old Wed 01 February 2012, 22:48
domino11
Just call me: Heath
 
Cornwall, Ontario
Canada
Hey Nils thats awesome!
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  #494  
Old Thu 02 February 2012, 06:14
darren salyer
Just call me: Darren #101
 
Wentzville mo
United States of America
Hi Nils,
I've been lurking on your thread for quite a while.
Nice work!!

Will you be controlling your vacuum motors with the Mach control screen, or using some other method?
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  #495  
Old Thu 02 February 2012, 15:03
sailfl
Just call me: Nils #12
 
Winter Park, FL
United States of America
Darren,

I am going to use a remote switch like you can buy at WoodCraft. They way I can place the material on the table, turn the vacuum on and check to see if it is holding. I turn on/off my dust collector the same way.

Thanks
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  #496  
Old Thu 02 February 2012, 15:28
darren salyer
Just call me: Darren #101
 
Wentzville mo
United States of America
Will the switch be rated to carry the amps?
My dust collector is too big for one of those, but its a 220v 5 HP. model.
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  #497  
Old Thu 02 February 2012, 16:47
Regnar
Just call me: Russell #69
 
Mobile, Alabama
United States of America
Darren I don't know Nils newest plan but you could always use a contactor.
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  #498  
Old Thu 02 February 2012, 17:48
sailfl
Just call me: Nils #12
 
Winter Park, FL
United States of America
Darren,

My new dust collector is 3 HP 220v and the remote will work.

As Russell has suggested, you could make your own. I think you could use a solid state relay to go from 220 to 110 and then use 110 version of the remote.

I am using SSR for my vacuum hold down and using the 110 remote.
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  #499  
Old Thu 02 February 2012, 19:20
darren salyer
Just call me: Darren #101
 
Wentzville mo
United States of America
Now I've got my feeble mind wrapped around it.
Thanks for clearing it up.

In my defense, grinding rails has made me a little dense......
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  #500  
Old Thu 02 February 2012, 22:01
MetalHead
Just call me: Mike
 
Columbiana AL
United States of America
Darren the PMDX-126 has two relays on board. You can use these relay to charge a coil on the same type contactor used in the latch curcuit. The difference is the latching is controlled by the PMDX-126 board via Mach. You can also add a PMDX-104 baord if you need extra relays.
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  #501  
Old Fri 03 February 2012, 00:26
KenC
Just call me: Ken
 
Klang
Malaysia
My hold down vacuum motors are 240V single phase, I lay the plugs near the loading end. I do like what Nils did, so that I can check if the vacuum is holding the work piece proper. I don't consider controlling the vacuum hold down with Mach3 or EMC2 a practical thing to do. You just can not be sure of the work piece is properly held down by it self... they might be just too many leaks due to too many factors...
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  #502  
Old Tue 29 May 2012, 03:46
sailfl
Just call me: Nils #12
 
Winter Park, FL
United States of America
Posted pictures on Regnar's thread but I thought I would post here.

Prototype cut out of .75" China plywood.
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File Type: jpg SSCN0474.JPG (64.9 KB, 982 views)
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  #503  
Old Wed 30 May 2012, 03:27
Tom Ayres
Just call me: Tom #117
 
Bassett (VA)
United States of America
Vaccum Hold-down

Hey Nils,
Do you have any pics of your 'zones' set-up? I just started my build and wanted to plan in an effective hold-down design before I got too far. Also is the board cut with with square divits or pronounced square pods with channels like you would see on larger commercial cnc's? Thanks, Tom
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  #504  
Old Wed 30 May 2012, 05:20
sailfl
Just call me: Nils #12
 
Winter Park, FL
United States of America
Tom,

I do not but I can take one next week. I am going to a sign workshop starting Thursday.
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  #505  
Old Wed 30 May 2012, 06:04
MetalHead
Just call me: Mike
 
Columbiana AL
United States of America
Nils,

Can you ellaborate on the sign workshop?
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  #506  
Old Wed 30 May 2012, 06:21
sailfl
Just call me: Nils #12
 
Winter Park, FL
United States of America
Mike

June 2012 Sign Workshop using Aspire.

Details here:

http://www.vectric.com/forum/viewtop...=11672&start=0

I think he still has openings. There is another MechMate person attending. I think it is going to be a fabulous learning experience.
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  #507  
Old Sun 25 November 2012, 06:20
sailfl
Just call me: Nils #12
 
Winter Park, FL
United States of America
I thought I would post a picture from the last work that I have been doing.

Started on the 20th and completed on the 24th, I cut 117 3/16" x 4' x 8' Acrylic sheets to make 350 units for my client the display company. The picture is some of the work.

There is a possibility that I will have to cut another 117 sheets by the 12/3.
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File Type: jpg DSCN0692.JPG (79.7 KB, 770 views)
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  #508  
Old Sun 25 November 2012, 16:14
darren salyer
Just call me: Darren #101
 
Wentzville mo
United States of America
When I look at that, I see stacks of money!!
Good job.
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  #509  
Old Sun 25 November 2012, 16:23
sailfl
Just call me: Nils #12
 
Winter Park, FL
United States of America
Thanks Darren. It is a lot of work but it is worth it.
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  #510  
Old Mon 26 November 2012, 19:25
Robert M
Just call me: Robert
 
Lac-Brome, Qc
Canada
Send a message via Yahoo to Robert M Send a message via Skype™ to Robert M
Nils, seem like the same customer as about 2ys ago !?
Is this work done with your new vac table ?
Best of….for the other set of sheets !!
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