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  #1  
Old Wed 17 April 2013, 18:49
larosta
Just call me: Phil
 
California
United States of America
Long Table

I am considering building a table for use in cutting large fabric panels. My question is can the MechMate design be scaled such that the table size is 96 inches (2.5 meters) wide by 50 to 60 feet (15.25 to 18.25 meters) long?
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  #2  
Old Wed 17 April 2013, 22:35
domino11
Just call me: Heath
 
Cornwall, Ontario
Canada
There has been a 20 foot table done already.
20' long table, 5HP spindle - Port Aransas, USA
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  #3  
Old Thu 18 April 2013, 00:18
swatkins
Just call me: Steve
 
Houston
United States of America
Would the cables become too long at 60 feet?

Would all the cables need to be increased in size to combat signal loss and voltage drop?
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  #4  
Old Thu 18 April 2013, 01:03
KenC
Just call me: Ken
 
Klang
Malaysia
for the stepper power cable, at 3A@60V, I don't see serious voltage drop issue. but I do worry the small signals @5V@mA signal, you can always use 12V or better still 24V small signal config.
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  #5  
Old Thu 18 April 2013, 12:48
skypoke
Just call me: Chuck
 
Port Aransas
United States of America
I think the limiting factor is more the span of the gantry and what tool it will carry than the x length. I'd sure consider drives and travel speeds carefully before jumping into it. As others have mentioned, the increased cable lengths will make wiring quality and sizing more critical and the potential for noise on these longer cables is increased.

Not familiar with fabric cutting. I'm assuming a swivel head knife is used? Wonder how many lbs of down force are required? Making hot air balloons?

Chuck
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  #6  
Old Thu 18 April 2013, 14:44
digit
Just call me: Dominic
 
Quebec
Canada
Quote:
Originally Posted by KenC View Post
for the stepper power cable, at 3A@60V, I don't see serious voltage drop issue. but I do worry the small signals @5V@mA signal, you can always use 12V or better still 24V small signal config.
4mA - 20mA current loop ?
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  #7  
Old Thu 18 April 2013, 21:13
KenC
Just call me: Ken
 
Klang
Malaysia
you can always set up a test rig with some batteries, a wire of the length you want & some resistors to limit to the current which you want.
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