Upstate NY build

New Home Forum LowRider Your Builds – LowRider Upstate NY build

This topic contains 15 replies, has 6 voices, and was last updated by  Ryan 1 year ago.

Viewing 16 posts - 1 through 16 (of 16 total)
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  • #70240

    Benoit
    Participant

    Allo everyone

    I started building my table today. I got it all squared. It’s looking pretty good. I’ll add the side which will have a unistrout on them. I’ll add the top layer which will be at the same height of my table saw. Here are some starting pics.

    #70243

    Jeffeb3
    Participant

    Nice shop. Jet table saw, RAS, joiner. Looks like a good and flat bed. PCan’t wait to see what you make with the Low Rider.

    #70269

    Ryan
    Keymaster

    That is a sturdy looking table, dang!

    #70323

    Mike Thorn
    Participant

    Dude that looks almost exactly like a table I designed for the lowrider!LR2-Table-v5
    It looks great!

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    #71437

    Benoit
    Participant

    So here is a bit of an update. Did a Crown Test with Ryan’s gcode. Its OK but it looks a bit off in places. I probably need to get a sharper pencil. Anybody has ideas?

     

    IMG_3427

    My next step is to deal with all the cables and then figure out where and how to place the electronics.

     

    Lesson learned, uni strut can be off. I built the table thinking massive would be better but now, not so sure. oh well.

    Attachments:
    #71446

    Ryan
    Keymaster

    I wouldn’t worry about that drawing so much that pen mount does not lend itself to accuracy (mounted stiff on the far end and no spring). Get a tool on there and try it out. Smaller is better but you can only go as small as your largest project.

    #71449

    Jeffeb3
    Participant

    Lesson learned, uni strut can be off. I built the table thinking massive would be better but now, not so sure. oh well.

    Interesting. It seems like when you start with a huge CNC like this, you can go crazy looking for flat. My recommendation is to just bassically ignore it for a while, and get some through cuts cut. If you’re within ~5mm across the whole sheet of plywood, that’s usable. Get some CAM and setup practice, and then you can start optimizing the flatness. You’ll also learn a lot about where it matters and where it doesn’t and how to optimize your workflow to reduce it’s impact.

    For example, when I did the carving on my MP3DP, I was using a v-bit to do precise carving for the logos, which requires very good Z. I used the same origin for all the cuts, but I split the carving into areas that were manageable (about 12″ across). When I did my setup, I added an extra step of jogging to where the design would be cut, and finding a good Z value there, right in the middle. The error in Z was only the error in that area, which was very accurate for a 12″ V carving. I proceded to “learn” a few other things :), but the flatness worked out fine. When I went to cut out the parts, I just added 2mm or so to the final cut depth, and any unflatness was just cutting into the spoil board. NBD.

    All that is to say, you’ve got a great looking build, and as long as your not using a clearance plane of 10mm and cutting 10mm into the spoil board, don’t worry about the flat so much.

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    #71457

    Benoit
    Participant

    Well I got impatient.. crown test engraved.

     

    0BEB00F9-6659-4F73-92B0-7735BD40F0A8

     

    Looks good to me. I got to test some more.

    #73279

    Benoit
    Participant

    Update.

    I modified my table to take into consideration some weird squaring issue. I did operate on it.  The table was too fat so I cut things.

    IMG_6357

    I use an eye bolt for my end stop. I had them laying around.

    IMG_6356

    My next thing to do is add a few pieces of MDF with t-tracks in between them like this. Any suggestion on this?

    worktable-idea

    Here is how it looks now. Everything is now squared. Im pretty happy with it. Ill so some cutting later today. I test with a 4′ x 8′ rectangle 3mm deep to see the precision of the table. It does 1mm down per pass so that makes 3 pass. I had some issues being not square but I think its taken care of now.

    #73285

    Mike Thorn
    Participant

    Cool thanks for the belt/endstop idea. Looks good in my opinion.

    #73286

    Josh
    Participant

    On my mpcnc I used 5/8 t track so I could use 3/4 MDF and have an 1/8″ buffer.  I cut my slabs 5″ wide and was going to screw them down but haven’t had a need to.  I have over 300 hours on the machine and have only had to flip two slabs.

    #73305

    Benoit
    Participant

    On my mpcnc I used 5/8 t track so I could use 3/4 MDF and have an 1/8″ buffer.  I cut my slabs 5″ wide and was going to screw them down but haven’t had a need to.  I have over 300 hours on the machine and have only had to flip two slabs.

    You don’t fasten the MDF down? I guess your mpcnc is fasten to the MDF or? How are you t tracks holding?

    #73313

    Josh
    Participant

    My mpcnc is built on a half sheet of melamine and the t-tracks are screwed down to that then the slabs are actually melamine too because I had a bunch left over.  The slabs are really just a spacer. I did countersink a few more screws into the t-track.  I don’t like the idea of screwing into the spoil board because screw holes tend to pucker.

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    #73318

    Barry
    Participant

    My mpcnc is built on a half sheet of melamine and the t-tracks are screwed down to that then the slabs are actually melamine too because I had a bunch left over. The slabs are really just a spacer. I did countersink a few more screws into the t-track. I don’t like the idea of screwing into the spoil board because screw holes tend to pucker.

    I just surface off the puckers….  😎

    #73319

    Benoit
    Participant

    the t-tracks are screwed down to that then the slabs

    That’s awesome.. So your t-tracks are actually dictating your leveling. I wouldn’t have think about that. Is your floor leveled? I just found out that my floor was not leveled and assumed it was … since my squaring issue.

    #73326

    Ryan
    Keymaster

    I just surface off the puckers…. ?

    Watch your mouth…..ohhhhhhh, never mind.

     

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