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  1. #1
    Quote Originally Posted by Nr1madman View Post
    Been playing some more :D

    Look at this video, what might be causing this weird motion?
    To fast motion for set kernel speed or just funky g code?
    Have cut circles with constant speed so this was a first :)
    https://m.youtube.com/watch?v=hlvP9uEJP8g

    Skickat från min SM-G955F via Tapatalk
    The fact that it looks the same each rotation would suggest to me its the G-code itself, it could be made up of arcs not radii and the machine could be in exact-stop mode maybe?

  2. #2
    Thanks for the help guys!

    I'm greatly relieved that my weak camskills are the culprit :)
    Guess do it again, do it right is in order!

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  3. #3
    Strange code that what did you create it in.?

  4. #4
    Quote Originally Posted by JAZZCNC View Post
    Strange code that what did you create it in.?
    Estlcam :)
    For my simple needs it feels really intuitive / basic.
    Tried cambam some but it just messes with my mind.
    For real simple dxf parts I've tried the included cam in uccnc with good results!

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  5. #5
    Quote Originally Posted by Nr1madman View Post
    Estlcam :)
    For my simple needs it feels really intuitive / basic.
    Ok that surprises me because I've used Estlcam and the code is usually nice and clean. That thou is strange how it does 180 while ramping.
    Last edited by JAZZCNC; 02-04-2018 at 07:56 PM.

  6. #6
    Quote Originally Posted by JAZZCNC View Post
    Ok that surprises me because I've used Estlcam and the code is usually nice and clean. That thou is strange how it does 180 while ramping.
    More than likely my fault :D

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  7. #7
    New day and new questions :D

    I fused my 24v psu with a 2A fuse.
    But now that I think about it.. must be wrong?
    The psu is 24v / 2A but thats on the secondary side.
    Input is 50w so fuse should be around 0.25A.. correct?

    My toroid is 500VA so without inrushcurrent 2.2A fuse should be enough? I fused 2.3A but that kept blowing every 5-7times I powered up. Exchanged for a 3A and now it seems okey but is it still protected?

    I'm wanting to exchange to MCB type of fuses. Now I have 5x20 glassfuses. Not really easy to find MCB with these kind of ratings :)

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  8. #8
    Quote Originally Posted by Nr1madman View Post
    New day and new questions :D

    I fused my 24v psu with a 2A fuse.
    But now that I think about it.. must be wrong?
    The psu is 24v / 2A but thats on the secondary side.
    Input is 50w so fuse should be around 0.25A.. correct?

    My toroid is 500VA so without inrushcurrent 2.2A fuse should be enough? I fused 2.3A but that kept blowing every 5-7times I powered up. Exchanged for a 3A and now it seems okey but is it still protected?

    I'm wanting to exchange to MCB type of fuses. Now I have 5x20 glassfuses. Not really easy to find MCB with these kind of ratings :)

    Skickat från min SM-G955F via Tapatalk
    Re. 24V PSU - you're broadly correct - though personally I'd give it a little more headroom (rough rule-of-thumb is 125%) - probably 300mA, and with a power-supply then use an anti-surge or time-delay fuse.

    For the toroidal transformer an anti-surge is a must, though I'd* even go as far as installing a NTC thermistor in series with the primary coil to limit the inrush current.

    * wrong tense : I'm building up a PSU now for my next machine - NTC thermistors on order, SSRs on order - in the mistaken belief that zero-crossing would be a good thing - but a little googling reveals the role of the NTCs.

  9. #9
    Quote Originally Posted by Doddy View Post
    For the toroidal transformer an anti-surge is a must, though I'd* even go as far as installing a NTC thermistor in series with the primary coil to limit the inrush current.
    I was under the impression that I could get away with 500va without anti surge but 600va and larger was more of a problem?

    Can confirm that my entire shed blinks and hum for a sec when I power the toroid :D

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  10. #10
    Quote Originally Posted by Nr1madman View Post
    I was under the impression that I could get away with 500va without anti surge but 600va and larger was more of a problem?

    Can confirm that my entire shed blinks and hum for a sec when I power the toroid :D

    Skickat från min SM-G955F via Tapatalk
    I have NTC on my transformer was a bitch to get the right one. I have no issues running it without NTC (Doesn't trip anything) but the real advantage for me is I can use a MCB type a if you use NTC for extra protection, remember I blew a transformer up already lol.

    We're 99% certain we plugged the bridge rectifier in back to front during testing but you're not using one are you?

    I have a 1kva transformer 45v output (70v when rectified)
    Last edited by Desertboy; 03-04-2018 at 08:40 AM.
    http://www.mycncuk.com/threads/10880...60cm-work-area My first CNC build WIP 120cm*80cm

    If you didn't buy it from China the company you bought it from did ;)

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