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  • VladoM commented on VladoM's instructable Build Big Cnc at Home 3x2m6 days ago
    Build Big Cnc at Home 3x2m

    just added. you will find it in one of the comment

    I have 3d model but i will keep that, as that was to help me to decide about thinks, not much about corect dimensions. I have searched for known components so here are the racks, pinions, drivers, motors. the rest was second hand or from local shops so i dont have any links for that. The Z axis screw as i recall is 2cm wide and z rails where only 15mm wide not 20cm as the rest but all that was scond hand thats why i made the nut holder atc... you will need shielded cables, energy chains limitswitches but for all that i just choosed what found first but the component list holds the most important parts on which i spent lot of time reasoning why these.X axis:http://www.cnc-discount.de/epages/62924595.sf/en_GB/?ObjectPath=/Shops/62924595/Products/%22O20%20%201600%22http://www.shop.cncdriv...

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    I have 3d model but i will keep that, as that was to help me to decide about thinks, not much about corect dimensions. I have searched for known components so here are the racks, pinions, drivers, motors. the rest was second hand or from local shops so i dont have any links for that. The Z axis screw as i recall is 2cm wide and z rails where only 15mm wide not 20cm as the rest but all that was scond hand thats why i made the nut holder atc... you will need shielded cables, energy chains limitswitches but for all that i just choosed what found first but the component list holds the most important parts on which i spent lot of time reasoning why these.X axis:http://www.cnc-discount.de/epages/62924595.sf/en_GB/?ObjectPath=/Shops/62924595/Products/%22O20%20%201600%22http://www.shop.cncdrive.com/index.php?productID=249http://www.shop.cncdrive.com/index.php?productID=737http://www.ehlinik.cz/hlinikove-jekly-ctvercoveobdelnikove/kat-F300000101.html?m=eurhttp://www.shop.cncdrive.com/index.php?productID=716http://www.shop.cncdrive.com/index.php?productID=743Y axishttp://www.shop.cncdrive.com/index.php?productID=249http://www.shop.cncdrive.com/index.php?productID=248http://www.shop.cncdrive.com/index.php?productID=737http://www.shop.cncdrive.com/index.php?productID=404http://www.shop.cncdrive.com/index.php?productID=398http://www.shop.cncdrive.com/index.php?productID=716http://www.shop.cncdrive.com/index.php?productID=743the links remind me one think i didnt added in instructable th racks for Y axis are made form one 2m long and one 1m long racks properly aligned..Z axishttp://www.shop.cncdrive.com/index.php?productID=700http://www.shop.cncdrive.com/index.php?productID=674aluminum plates where from http://www.ehlinik.cz

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  • VladoM commented on VladoM's instructable Build Big Cnc at Home 3x2m1 week ago
    Build Big Cnc at Home 3x2m

    Thanks. The step have in its name (avoid this) it is just showing my path and this welded support was mystake. There is picture with support, simple screwed together square pipes example. welding bents the metal... hard to avoid for me or any beginner i suppose. You could avoid the support completly if you had flat enough surface or just use the 2 square pipes you see on top of the welded support.. any simple support resulting in 4 legs which you could adjust somehow to make the bed leveled would do. I had friend with mechanical degree sugesting the weld is important. from my experince now it wasnt. 8mm screw where more than enough in the rest of the construction so it would be fine for the support too.

    You basicaly described the proces how i was trying to do it. I touched the oposite corners atc.. but still the owerhanging top parts of the support where pulled down. It was annoying thats why i dont recomend it. We are talking 1mm per roughly 40cm. But if you know how to make the weld properly then sure, welded construction counts like one piece. So better then more screwed together.

    :D i was glad to finish thisone...but i suppose we could have chat about it if u are serious.

    It is shipping container, but yeah as i am checking the machine it is 2m wide :D i need to change this in name. the woking area is x1430, y2680. cost was around 3000e. but not sure exactly as i bought many parts and i lost track. I looked into belt and pinion but belts are stretchy and ive seen big machines with belts and i just coulnt imagine 3m belt to move 50kg (or more) bridge without stretching. Yeah even simple aluminum or better dural square tubes would be good choice.

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  • VladoM's instructable MACH3 4 Input 4 Output Simple Expansion's weekly stats: 1 month ago
    • MACH3 4 Input 4 Output Simple Expansion
      606 views
      19 favorites
      0 comments
    • Modbus Mach3 to Arduino(no Additional Hardware) + Brain Setup
      519 views
      12 favorites
      1 comments
  • 6 Axis CNC MACH3 Engraving Machine Interface Breakout Board USB PWM Spindle with ASKPOWER A131 Series

    In short; it shouldn't be a problem.You need to pick motor driver as the board controls the driver and driver controls motor. The board sends direction and step pulses to driver (i would say this is standard for all driver boards), so you have two connections there. And motors are 4 cables bipolar and 8 cables unipolar both can be connected in bipolar setup. Just check the driver, it should have 4 connection A+ A- and B+ B- for the two motor coils.

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  • 6 Axis CNC MACH3 Engraving Machine Interface Breakout Board USB PWM Spindle with ASKPOWER A131 Series

    i tested it and sure you can disable it. i will change this in the instructabe so i dont confuse anyone.

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  • 6 Axis CNC MACH3 Engraving Machine Interface Breakout Board USB PWM Spindle with ASKPOWER A131 Series

    I will need to test this to be 100% sure abut why i set it, but you are right i didnt needed the output1 as the pwm signal is set in Config / Ports&pins / motor outputs / Spindle.

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  • VladoM commented on simonrafferty's instructable CNC Plasma Table1 year ago
    CNC Plasma Table

    Very interesting. I am really starting to wonder what the plasma i ordered will do :D. I really hope it is ok to post a link so you can have a look. their HF plasmas are 3phase. I have single phase and it is touch start and it is Pilot Arc. http://www.telwin.com/webtelwin/site.nsf/webindex?... So what you recon? without HF what would be the distance it would be able to strike proper arc? In my view you have high voltage charged electrode which ionizes air so creating conductive path for the arc thats why i thought 5mm isnt totally impossible, but yeah... maybe not too real either. I will share my experience once ill try the machine out. thanks for your answers

    SiThanks for the replay and important info. I for example didnt realized about RFI. And i should have mention that even the plasma i bought is "touch start" it does have pilot arc so it will cut mesh or rusty material. (not sure if i can post here link to the shop so i rather didnt) Basically from my research HF is to create the initial spark, touch cant do that. You need to (touch) or in case of my machine according to manufacturer be less than 5mm from material. So if i understand all i am risking here is that the initial start will not work? Also cutting on pilot arc doesnt really make a sense to me as it wouldn't cut the material with same power so you might not cut trough or cut will be uneven. So i see little difference between not cut material or cut badly (on pilot arc...

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    SiThanks for the replay and important info. I for example didnt realized about RFI. And i should have mention that even the plasma i bought is "touch start" it does have pilot arc so it will cut mesh or rusty material. (not sure if i can post here link to the shop so i rather didnt) Basically from my research HF is to create the initial spark, touch cant do that. You need to (touch) or in case of my machine according to manufacturer be less than 5mm from material. So if i understand all i am risking here is that the initial start will not work? Also cutting on pilot arc doesnt really make a sense to me as it wouldn't cut the material with same power so you might not cut trough or cut will be uneven. So i see little difference between not cut material or cut badly (on pilot arc). Or is there something i am missing? Like that it is very short period of time so it will not affect the cut? Bare in mind I dont own yet any plasma so; no experience :D. Thanks for all infoThanksVlad

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  • VladoM commented on simonrafferty's instructable CNC Plasma Table1 year ago
    CNC Plasma Table

    HiIn text is written: The cutter must have 'HF Start'. I wonder why is that? I was ordering plasma for my machine recently and it is not HF and according to manufacturer the torch just needs to be close enough and the arch will strike, similar to use with roller guide wheel. So why it wouldn't work on your machine and why it is must have? the HF creates strong interference with electronics if cheap machine bought, so bigger problem would be using HF.

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