4x8 Gantry Build...

[Apocalypse Fabrication]

I dont have the gantry in front of me to measure, but is it 3030 series? Will these studs work?

http://www.amazon.com/80-20-Inc-Seri...tuds+5%2F16-18

I think those would be way easier for my application, since I wouldnt have to unbolt the whole gantry to install more t nuts.

Thanks

[jeepsr4ever]

I will send some for you no problem. If your getting vibes its not from flex.

[Apocalypse Fabrication]

Thanks Matt

What's your theory on the condition? I am wondering why it vibrates in the middle of the y axis, but not on the edges. Obviously, I will know more after I get it bolted down.

[jeepsr4ever]

Get it bolted up first. Sometimes its the Mag-lok not being stiff and that is easy to adjust by the two bottom 1/4-20 bolts and/or the two 90 degree screws for the back of the torch plate. You should not get flex in the middle of the gantry. You may also get some flex from the Y axis truck if it isnt adjusted to a hard preload. We are setting Y axis trucks before they go out the door now so gantry kits users wont have to adjust them. It is a challenge to explain that the truck needs enough preload to be hard to move before installing the beefy Z axis. After installing the Z axis the truck relaxes its preload some but stiffens the movement. I would start with bolting the gantry together properly before making any adjustments.

[Apocalypse Fabrication]

The y axis truck was preloaded from the factory on my kit and felt like it was set properly upon install.

I am bolting the table frame to the floor. The gantry has been bolted together, properly, quite a few times now. I am familiar with the preload procedures, since if you remember, I had to reset my x axis trucks.

[Apocalypse Fabrication]

The table was bolted to the floor and I preloaded the y axis truck some more. The cut quality got much worse on the last cut we did. I think I will back the truck back off again and maybe raise the THC dampening rate. Frustrating as always.

[jeepsr4ever]

What are you trying to cut, thickness? Speed, amperage and tip volts please. Also what about your torch are you using a sheilded cap or the deflector ring?

[Apocalypse Fabrication]

Hypertherm 65 with Full size machine torch

Finecut Consumables
150 ipm cut speed
.06 cut height, with THC on
75 torch volts
40 amps
Deflector ring, since I am pretty sure you cant use the shield on FineCut.
16 gauge CRS

We are getting sporadic jagged cuts. Sometimes it cuts perfectly, but the next letter will be jagged. Sorry I dont have any pics at this time. I can have Katie post some if needed.

[jeepsr4ever]

Oh also make sure your THC rate is no more than 20. At 30 it will oscillate when it turns THC back on after locking it out for the corner movement

[Apocalypse Fabrication]

Oh also make sure your THC rate is no more than 20. At 30 it will oscillate when it turns THC back on after locking it out for the corner movement

I will check tonight... thanks