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Messages - NormB

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71
General Mach Discussion / Re: Leveling the gantry and table
« on: January 26, 2010, 02:01:17 PM »
If you have a way to view Autocad files I have a drawing of the assembly

72
General Mach Discussion / Re: Leveling the gantry and table
« on: January 26, 2010, 02:00:41 PM »
No the sides are made up from extruded aluminium from 20/20 bolted together then round rod supports mounted to each side holding 2 veearings supporting the gantry on each side linear bearings.  The table top rests on the side rails and bolts to them. 

73
General Mach Discussion / Re: Leveling the gantry and table
« on: January 26, 2010, 12:24:04 PM »
the whole right side full length is low compared to the right side.  It's as though one rail is a bit lower than the other that is why I thought of shimming up the whole side but with what.  Now machining is I think a more permenant and correct way to make it right.  I do have a variable speed router if necessary I have a 3/4 plunge bit can do the samething smaller steps.

74
General Mach Discussion / Re: Leveling the gantry and table
« on: January 26, 2010, 05:37:28 AM »
I see you already told me that................thanks Hood, I will look for a fly cutter maybe 2" dia or more.  Have to see what I can find I am not removing a lot of material so can be rather large with a 2 1/4 HP router.

75
General Mach Discussion / Re: Leveling the gantry and table
« on: January 26, 2010, 05:36:07 AM »
Would you use like a 3/4 dia bit to do this?  Or is there some sort of fly cutter to use?

76
General Mach Discussion / Re: Leveling the gantry and table
« on: January 26, 2010, 05:30:19 AM »
that would save a oot of effort finding the low spots for sure.  As I think about it that really makes a lot of sense.  the you know the entire surface not just corners are perfecly level to the gantry. and full length too.

77
General Mach Discussion / Re: Leveling the gantry and table
« on: January 26, 2010, 05:28:25 AM »
Is that what most do install a table then begin to rout the surface to level it?  I did this backwards then I cut T track inot the top and mounted it.  I would have to be careful not to hit the Alum T track.  

78
General Mach Discussion / Re: Leveling the gantry and table
« on: January 26, 2010, 05:25:26 AM »
Well, I guess I can but wow that would take some time.  I think you mean set Zero on the low corner and begin passed backa nd forth to level the table.  This is 24" x 48" that might take some time.

79
General Mach Discussion / Leveling the gantry and table
« on: January 26, 2010, 04:42:14 AM »
It seems I am beginning to run more steady now and am looking more critically at the actual cuts being made and I find my table is not parallel to the gantry by 3/64 of an inch.  This is from side to side on the short axis.  #hat I am doing is setting Zero at onecorner of the table raising the Z  move to corner 2 set zero and checking it's the same. 

Having determined this small error what is the best material to use to shim the table flat.  I have a solid base with an MDG top with screws holding the mdf down in four places.  This is 1" MDF with T bar slots cut in it and I have T bar in the slots. 

I am not sure if tape or some other material is best to use.  I  am sure others have had this situation, I can see why you really want to protect that table top now it takes a bit of time to level things out for accuracy.

80
General Mach Discussion / Re: Remember Settings
« on: January 25, 2010, 08:21:28 AM »
thank you got the answer, Yes the Gcode is where this is happening.  I am using tool change ATC for the G-code and that will cause a reset and I nowknow why.

Thanks again.

Norm

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