"Origami" CNC Plasma Build - folding 1200 x 600mm cut area

andypugh wrote: Would the motor be safer from damage on the other side of the uprights? (well, damage from the floor, or items on the floor) it is more likely to be damaged by the work or the plasma.

It's a good question Andy and one I flip-flopped on quite a bit. I settle on having the motors on the outside so as to keep them away from any crap being spat out buy the torch. The intention is to create sheet metal or high impact plastic covers over those ends to protect that assembly from being knocked and general air borne grimme. This external model along with protective covers is a pattern I have seen used elsewhere. For some reason I think tommylight has done something along these lines.

As a further "protection" when the machine is in its stored state there will be a piece of equipment (on wheels) sitting in front of it that will act as a buffer for that gantry end assembly from it getting accidentally knocked. But with this style of machine where I can't put it fully vertical there is always some risks involved. However ... I have worked out that if I fabricated a custom water chamber I could make a shape that could get the volume needed while allowing the table to tilt to the vertical another 5-10 degrees. That small amount will bring things that much further into the bounds of the frame and further reduce the risk of things getting knocked. It might mean I need to add some extra spacing to the wheels I have. They have a finished working height of 130mm.

Cheers - J.

A few questions if I may ...

Rod - I have been reading through your spaceship build and maybe I am missing it but roughly what is the gap from bed top to the bottom of your gantry? 150mm, 200mm, 300mm more? I'm trying to get a feel for what would be reasonable v's excessive v's under baked.

Everyone with Mesa experience:
(a) I will be using a 7i76e card. I already have a machine with linuxcnc all installed and tuned setup with a PCI plug-n-go setup and 1080p touch screen. I am wondering if I can make it do double duty? i.e. have a config that runs the mill and a different config that uses the onboard NIC to run the plasma. I already have a USB wifi dongle on it so can get the network separation.

(b) Looking at the portability side of things a laptop with its combined screen/compute would be an ideal way to connect to and drive the 7i76e. Is there any laptop options that when turned into "performance mode" will be effective? Or am I asking for a unicorn?

Thanks everyone.

Joco wrote: A few questions if I may ...

Rod - I have been reading through your spaceship build and maybe I am missing it but roughly what is the gap from bed top to the bottom of your gantry? 150mm, 200mm, 300mm more? I'm trying to get a feel for what would be reasonable v's excessive v's under baked.

For a water table at least 200mm, 300 should be max.

Joco wrote: Everyone with Mesa experience:
(a) I will be using a 7i76e card. I already have a machine with linuxcnc all installed and tuned setup with a PCI plug-n-go setup and 1080p touch screen. I am wondering if I can make it do double duty? i.e. have a config that runs the mill and a different config that uses the onboard NIC to run the plasma. I already have a USB wifi dongle on it so can get the network separation.

Yes, but not at the same time.

Joco wrote: (b) Looking at the portability side of things a laptop with its combined screen/compute would be an ideal way to connect to and drive the 7i76e. Is there any laptop options that when turned into "performance mode" will be effective? Or am I asking for a unicorn?

Some new-ish Fujitsu will do just fine, but i have no model number.

Thanks Tommy. I have remodelled to accomodate 200mm height. I have also done some adjusting to see what I can do to be able to store the table fully vertical. If I do that then with a 200mm gantry (table top to bottom of gantry) eveything JUST fits inside the boundary of the frame. Assuming I park the X axis at the top so torch and cables are out of the way. While not necessary it minimises the footprint to be just the base size (approx 660mm x 1040mm). It does create some other challenges but what the heck, where would life be without some challenges.

On the ethernet front, yup undersatnd one at a time. And for my shop that is just fine. I do have spare Core2 machines that have good latency so its not like I have to do it. Just good to know it is an option.

I have a few spare laptops I might check just for a chuckle. But it was really a bit of a wish. Not seen any of fujitsu machines in the local market. All Dell, Lenovo, HP.

Cheers - J.

I've got about 86mm of travel on the Z.

Tommy - re your 200-300mm clearance from table top to bottom of gantry. Could you expand on why this is the target? Not debating it just keen to learn what drives that size band.

Rod - with your travel on Z is the torch tip always sitting below the gantry spans lower edge? From pics I recall seeing I was sure there was a reasonable space under it all.