1. #1
    Hello everyone, as my first post was not visible (I don't know why) here goes a second try. I am building a table with a work area of 12x6. It will mainly do plasma cutting but the occasional routing job may come up so I am building the gantry stiffness with that in mind. I plan to go with all aluminum to reduce the size of the motors and have a table that is lighter and faster than if I were to go with steel. not to mention aluminum tubing comes with better dimensions on the faces than with cold roled steel tubing. So I have my drawings done I am putting the final touches on the lengths and dims of that and I wanted some feedback. Here I am posting this up for you guys to either chew me out some or give me some kudos for a job well done. Here goes nothing... please refer to pics and provide any info on the matter, Thanks
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	Table preliminary.png 
Views:	71 
Size:	36.9 KB 
ID:	17289   Click image for larger version. 

Name:	Gantry Preliminary.png 
Views:	75 
Size:	18.9 KB 
ID:	17290  

  2. #2
    I have a question... how far away should the slat supports be to avoid heavy cutting? In other words how far does the plasma go beyond the cutting area? I know thickness and amperage play a role but lets say 2mm thick mild steel?

  3. #3
    Hi there, welcome to the forum!! I can't answer your second questions but can comment on your design!

    You'll need some cross bracing on the frame and gantry, especially if you'll be doing occasional routing!

    • How are you planning to have your Z axis mounted as the 4 tubes going 7' (?) across the table will flex like mad without any cross bracing/support.
    • How are you joining the aluminium together, I'm assuming welding as I can't see any brackets for bolting?
    • What are you planning on using for linear motion, supported round rail, linear profiled rails?

    There are more questions but the answers to the above will no doubt throw up some more!

    Build log...here

  4. #4
    Thanks for the response! I will be using profiled rails for linear motion. I have not yet decided on which motors to go with but I'm looking into DMM tech and a company called Teknic because they have a good warranty. I do plan to add supports to the gantry. I will also be welding it together. The routing work the table will do is light so that's why I chose aluminum. I could go with steel if it's better overall. I wanted to ask the community here for guidance on that note. I'm having some questions on how successful other folks have been mounting the profiled rails to cold rolled steel tubing? Is accuracy somehow lost without a face operation on the rail side of the tubing? For motion on X axis I have some angled rack and pinion but can go with 32mm balls crew which do you guys feel would be best since it is the longest axis? Even at 32mm I kind of feel the ball screw may not be rigid enough. Any thoughts.
    Last edited by silverdrgn; 23-01-2016 at 06:37 PM.

Similar Threads

  1. Fiirst Revision of my table 12x6 drawn, can i do my slats on test run
    By silverdrgn in forum Plasma Table Machines
    Replies: 0
    Last Post: 21-01-2016, 07:06 AM
  2. Advice on Mammoth CNC Router Build - Steel Framed - 2440mm x 1220mm cutting area!
    By Wejjmeister in forum Gantry/Router Machines & Building
    Replies: 87
    Last Post: 02-01-2016, 11:45 PM
  3. BUILD LOG: My 1st Hybrid Steel/Ally (1150 x 850 work area) (comments/advice please)
    By lebies in forum DIY Router Build Logs
    Replies: 18
    Last Post: 19-08-2014, 11:00 AM
  4. BUILD LOG: Melbourne Andy CNC build 1220x810 work area
    By AndyGuid in forum DIY Router Build Logs
    Replies: 4
    Last Post: 20-04-2014, 07:25 PM
  5. Wanted - Regular work for reliable machine shop in Northants/Kettering area
    By Narkedat90 in forum Opportunities Available & Sought
    Replies: 4
    Last Post: 06-04-2013, 03:09 PM


Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts