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Messages - Tweakie.CNC

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6991
Show"N"Tell ( Your Machines) / Re: The Laser Project.
« on: May 24, 2010, 04:52:49 AM »
I decided to make my 'home built' 4th Axis portable between machines so constructed a 'stand alone' controller which connects to the LPT3 port. Drilling a few more holes into the table of my router has enabled it to be fitted quite easily (fitting holes have also been drilled for the mating tail-stock but this is not required for eggs  :D ).
I made another Jacko egg and thought you might like to see the setup.

Tweakie.

6992
Perhaps a daft suggestion but could you not PM Darek http://www.machsupport.com/forum/index.php?action=pm;sa=send;u=257 and seek his advice.

Tweakie.


6993
FAQs / Re: need help
« on: May 24, 2010, 01:53:55 AM »
The Vectric range of software products are good. http://www.vectric.com/

Tweakie.

6994
Great work Dave, building up the Brownie points eh.

Chris will have to watch out when you start on the rings  ;D.

Tweakie.

6995
General Mach Discussion / Re: How Many Lines of Code
« on: May 21, 2010, 05:43:28 AM »
Good point Derek.
Perhaps we should have a competition ?.

This little chappie (code courtesy of Kent) runs into more than 342,000 lines.

   

Tweakie.

6996
General Mach Discussion / Re: How Many Lines of Code
« on: May 21, 2010, 01:50:37 AM »
This is the official line.

'Mach3 has a limit of 10,000,000 lines of Gcode even after licensing'.

Tweakie.

6997
No worries.  ;D

Glad you got the problem sorted. Looking forward to seeing some pics of the things you make with your new machine.

Tweakie.

6998
It is indeed that simple.

If you connect the minus end(-) of your HV supply to ground then the other wire will be +72 Volts with respect to ground.

If you were to connect the plus end(+) of your HV supply to ground then the other wire will be -72 Volts with respect to ground.

Tweakie.

6999
Quote
Typically, PS schematics show DC+ and DC- output. So my assumption is that with a linear unregulated PS, the DC is split into half positive and half negative? i.e. with a 72V output, is it +36 and -36?

Do you have a center tap on the psu output then ?. (3 wires)

If it is just a 2 wire output - then connecting the minus end to ground will make it 0 Volts and the other end will be +72 Volts. There will be no negative voltage levels.

Tweakie.

7000
Tangent Corner / Re: Welding a motor mount
« on: May 18, 2010, 01:52:06 AM »
I think the rule of buying second hand stuff comes in here. If it's cheap enough then it's worth the chance, If the seller wants proper money then don't take the risk.
(if that was electric welded then some of the current could have gone through the bearings which may prematurely fail as a result. The heat may have compromised the windings insulation or magnetic flux characteristics etc...) But if it's cheap enough - go for it.

Tweakie.

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