[Shop] Fwd: CNC router on kijiji

Thu Apr 13 16:42:40 EDT 2017

Everything I’ve read about 3040 mills is that they lack rigidity because of unsupported smooth rod, versus the Omio model which has linear rails under the hood…. I honestly think it’s worth raising the funds for the Omio model would be worth it.

I’ve read stories of buyers remorse on 3040’s and the lack of rigidity causing poor tolerances on aluminum after this thread started. Perhaps we should pass up on the cobbled together version? I’ll cite some of the 3d printers being subpar cause they’re on the cheap, versus the real cost of entry into the field.

-Norm

From: Ahron Train [mailto:atrain at atrain.ca] 
Sent: April 13, 2017 1:12 AM
To: RC <ranvir.chaudhri at gmail.com>
Cc: Norman Chu <norman.chu at gmail.com>; shop at hacklab.to; Igor Yeremin <igor.yeremin at gmail.com>
Subject: Re: [Shop] Fwd: CNC router on kijiji

I don't think Hacklab's hit the threshold for paying half ($27k in the bank) so we'll have to fund this ourselves.

I've never played with RC motors... are they reliable, and reasonable for this application? (This is the motor used: https://hobbyking.com/en_us/turnigy-trackstar-1-8th-sensored-brushless-motor-2100kv.html?___store=en_us)

I've found ball-screw upgraded 3040 available on ebay for about the same price he's asking -- so what's his home made enclosure and rc motor upgrade worth?Also, would be nice if he could throw in the original parts just in case we do want to revert something. (if they're around)

On Thu, Apr 13, 2017 at 12:48 AM, RC <ranvir.chaudhri at gmail.com <mailto:ranvir.chaudhri at gmail.com> > wrote:

I emailed the guy, the CNC router is still available. Does anyone have any specific questions about this thing? I can email him. The kijiji ad has a video of it cutting aluminum... is that not convincing enough? (I ask because I have no clue...) 

I assume we could get it for $1000, if not $900 (and hopefully Hacklab will pay half). If you think it's better to wait and get a more powerful CNC router let it be known. 

On Tue, Apr 4, 2017 at 4:39 PM, Ahron Train <atrain at atrain.ca <mailto:atrain at atrain.ca> > wrote:

Same, I'll put in $200 if this can do aluminum properly.

I know these 3040 machines are pretty popular, but don't know too much beyond that. Perhaps time to do a little research?

On Tue, Apr 4, 2017 at 4:16 PM, RC <ranvir.chaudhri at gmail.com <mailto:ranvir.chaudhri at gmail.com> > wrote:

I'd be down to throw in 100$ if you guys think it can do aluminum. I don't know much about these things so I bow down to the council's superior judgment.

On Apr 4, 2017 13:46, "Norman Chu" <norman.chu at gmail.com <mailto:norman.chu at gmail.com> > wrote:

2kW seems to be the upper limit. Look up www.omiocnc.com/products/x6-2200l-usb.html <http://www.omiocnc.com/products/x6-2200l-usb.html> 

These ones seem to be more proven for milling aluminum at decent passover depths (for a machine of this cost).

-Norm

On Apr 4, 2017 1:41 PM, "Igor Yeremin" <igor.yeremin at gmail.com <mailto:igor.yeremin at gmail.com> > wrote:

I think the spindle is a passive spindle shaft coupled with a belt to a 1kW RC copter motor. https://alumination.blogspot.ca/2016/06/cnc-build-overview.html
How many kW do you want on an aluminum frame? Our mill has a 1.5kW motor and it's 400kg of steel.

On 2017-04-04 1:29 PM, Norman Chu wrote:

The 1kW spindle feels a bit anemic for any metals, is the spindle water
cooled? Air cooled will just get aluminum swarf sucked in and kill it.

Otherwise +1, $100 to the pot if it's watercooled.

-Norm

On Apr 4, 2017 12:45 PM, "Ahron Train" <atrain at atrain.ca <mailto:atrain at atrain.ca> 
<mailto:atrain at atrain.ca <mailto:atrain at atrain.ca> >> wrote:

    Wow, that's not much more expensive than an unmodified 3040!  I
    think it's definitely taking a look at!

    On Tue, Apr 4, 2017 at 12:34 PM, Igor Yeremin
    <igor.yeremin at gmail.com <mailto:igor.yeremin at gmail.com>  <mailto:igor.yeremin at gmail.com <mailto:igor.yeremin at gmail.com> >> wrote:

        Thoughts?

        Says it's got proper linear rails and ballscrews.

        -------- Forwarded Message --------
        Subject:        CNC router on kijiji
        Date:   Fri, 31 Mar 2017 05:21:02 -0400
        From:   RC <ranvir.chaudhri at gmail.com <mailto:ranvir.chaudhri at gmail.com> 
        <mailto:ranvir.chaudhri at gmail.com <mailto:ranvir.chaudhri at gmail.com> >>
        To:     Igor Yeremin <igor.yeremin at gmail.com <mailto:igor.yeremin at gmail.com> 
        <mailto:igor.yeremin at gmail.com <mailto:igor.yeremin at gmail.com> >>

        Yo I came across this, worth it?

        http://www.kijiji.ca/v-hobbies-craft/city-of-toronto/3040-cnc-router-including-enclosure-cuts-aluminium-plastic/1250992404?enableSearchNavigationFlag=true
        <http://www.kijiji.ca/v-hobbies-craft/city-of-toronto/3040-cnc-router-including-enclosure-cuts-aluminium-plastic/1250992404?enableSearchNavigationFlag=true>

        shall I subliminally influence hacklab to buy it?

        <https://www.avast.com/sig-email?utm_medium=email <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> &utm_source=link&utm_campaign=sig-email&utm_content=webmail
        <https://www.avast.com/sig-email?utm_medium=email <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> &utm_source=link&utm_campaign=sig-email&utm_content=webmail>>
         Virus-free. www.avast.com <http://www.avast.com>  <http://www.avast.com>
        <https://www.avast.com/sig-email?utm_medium=email <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> &utm_source=link&utm_campaign=sig-email&utm_content=webmail
        <https://www.avast.com/sig-email?utm_medium=email <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> &utm_source=link&utm_campaign=sig-email&utm_content=webmail>>

        <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>
        _______________________________________________
        Shop mailing list
        Shop at hacklab.to <mailto:Shop at hacklab.to>  <mailto:Shop at hacklab.to <mailto:Shop at hacklab.to> >
        https://lists.hacklab.to/cgi-bin/mailman/listinfo/shop
        <https://lists.hacklab.to/cgi-bin/mailman/listinfo/shop>

    _______________________________________________
    Shop mailing list
    Shop at hacklab.to <mailto:Shop at hacklab.to>  <mailto:Shop at hacklab.to <mailto:Shop at hacklab.to> >
    https://lists.hacklab.to/cgi-bin/mailman/listinfo/shop
    <https://lists.hacklab.to/cgi-bin/mailman/listinfo/shop>

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.hacklab.to/pipermail/shop/attachments/20170413/5d5cc20f/attachment.html>