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  1. #1
    Join Date
    Aug 2011
    Posts
    135

    PCNC Enclosure update

    There was some interest from you guys in my previous post on the enclosure I'm building. Picked up all the parts from the fabricator today. The right side panel was not scaled correctly so I am waiting on a replacement. So far this is all I have done.


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  2. #2
    Join Date
    Nov 2005
    Posts
    201

    Smile Re: PCNC Enclosure update

    Keep us up to date. I want to improve mine soon. I like to see what other people do for enclosures

    Looking good so far

  3. #3
    Join Date
    Nov 2010
    Posts
    291

    Re: PCNC Enclosure update

    How are you fastening to the stand enclosure? Are you tapping like factory or are you running nuts and bolts? Looks good!

  4. #4
    Join Date
    Aug 2011
    Posts
    135

    Re: PCNC Enclosure update

    Quote Originally Posted by luv2ride View Post
    How are you fastening to the stand enclosure? Are you tapping like factory or are you running nuts and bolts? Looks good!
    Was planning on drill and tap, but had nuts just case. Nuts where used for ease. Holes don't need to be quite so precise

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  5. #5
    Join Date
    Aug 2011
    Posts
    135

    Re: PCNC Enclosure update

    Got a bit more done. The slanted extension had to be re bent and will be done tomorrow. Hopefully have time to get that installed tomorrow evening as well as the two front panels. Then the doors
    Also a pic of an led flood lamp that will be mounted inside. One on each side and possibly one in the center looking down.
    Attachment 245504
    Attachment 245504

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  6. #6
    Join Date
    Nov 2007
    Posts
    2151

    Re: PCNC Enclosure update

    Decent progress!
    I like the led lights. "want some of them"
    Panels look like s.s.?
    If so very nice
    I would suggest some sort of channel or S clip to hold lexan view ports in place and avoid drilling lexan panels.
    This should reduce crazing or cracking! "not always"
    Just an idea and I bet you have it covered

    md

  7. #7
    Join Date
    Aug 2011
    Posts
    135

    Re: PCNC Enclosure update

    Quote Originally Posted by mountaindew View Post
    Decent progress!
    I like the led lights. "want some of them"
    Panels look like s.s.?
    If so very nice
    I would suggest some sort of channel or S clip to hold lexan view ports in place and avoid drilling lexan panels.
    This should reduce crazing or cracking! "not always"
    Just an idea and I bet you have it covered

    md
    No not stainless. Just cold roll. I didn't have enough faith in my solid works sheet metal design skills to have them coated before I do at least 1 test fit. So far so good.

    I do have plans to drill the lexan. It's currently on my procrastination list though. I've become moderately skilled at doing it over the years without cracking it. Also I left a large edge around all the drill points. So that I'm not trying to drill right on edge.

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  8. #8
    Join Date
    Aug 2009
    Posts
    610

    Re: PCNC Enclosure update

    Looking really good so far! One can never have enough light in a machining situation that's for sure. FWIW I have had really good luck with using PET-G as a window material in various machinery guarding situations versus polycarbonate.

  9. #9
    Join Date
    Nov 2007
    Posts
    2151

    Re: PCNC Enclosure update

    The metal looks so clean! wow
    Let me detail more.
    putting holes in plastics like this is just not super durable.
    If you can avoid drilling holes at all and just mount a channel top and bottom for the panel to set in. or simple metal "s" clips so panel kind of floats !
    This avoids 2 problems expansion and contraction causing the plastic to crack at mounting holes "they are very different materials"
    Also plastic sheet material is a cast or extruded product and has built in stress.
    Crazing can be caused for a number of reasons water, chemical or pressure stress and many times holes are a place for the cracks to start.

    Another note on material I said lexan above and that's generic! search for threads on machine enclosure plastics. " or on a supplier website"
    There are very specific materials advised for machine enclosures and is proven from years of use.
    I would not expect material you get at home depot to stand up well to machining conditions.
    Don't get me wrong it wont completely fail but it could look bad .
    Anyway

    Some ideas to think about
    md

  10. #10
    Join Date
    Aug 2011
    Posts
    135

    Re: PCNC Enclosure update

    Quote Originally Posted by mountaindew View Post
    The metal looks so clean! wow
    Let me detail more.
    putting holes in plastics like this is just not super durable.
    If you can avoid drilling holes at all and just mount a channel top and bottom for the panel to set in. or simple metal "s" clips so panel kind of floats !
    This avoids 2 problems expansion and contraction causing the plastic to crack at mounting holes "they are very different materials"
    Also plastic sheet material is a cast or extruded product and has built in stress.
    Crazing can be caused for a number of reasons water, chemical or pressure stress and many times holes are a place for the cracks to start.

    Another note on material I said lexan above and that's generic! search for threads on machine enclosure plastics. " or on a supplier website"
    There are very specific materials advised for machine enclosures and is proven from years of use.
    I would not expect material you get at home depot to stand up well to machining conditions.
    Don't get me wrong it wont completely fail but it could look bad .
    Anyway

    Some ideas to think about
    md
    I got the lexan from a local distributor. I told them what it will be used for and this was there recomendantion. It's not plexiglas, which I beleive is what most home improvement stores sell. It wasn't terribly expensive so if I have to replace it with something else it's not the end of the world. I was worried about it turning into what ever tormach ships with their machine. Seams like every body's turns cloudy after a year of use.

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  11. #11
    Join Date
    Feb 2006
    Posts
    7063

    Re: PCNC Enclosure update

    Lexan is much softer, and MUCH more easily damaged than Plexiglas. It is, however, MUCH stronger - literally bullet-proof, if thick enough. So, if you're after long-term visibility, use Plexiglas. If you're after safety, use Lexan. In the presence of some coolants, Lexan will tend to cloud up over time, and simple cleaning will get it covered in small scratches very quickly. It will also develop micro-cracks and crazing, which will cloud it. Plexiglass is far more resistant to scratching , cracking and crazing. I've had Plexiglas in the enclosure on my knee mill for about 4 years now, and it still looks almost like new. Not sure Lexan would have held up as well.

    Regards,
    Ray L.

  12. #12
    Join Date
    Feb 2006
    Posts
    7063

    Re: PCNC Enclosure update

    Something very interesting has happened over the last couple of years - I used to buy 1/4" Plexiglas in 4x8 foot sheets, and paid about $150 per sheet. At that time, Lexan was about 2X the price. I just looked at prices from ePlastics.com, and the prices have notw reversed - Lexan is now cheaper than Plexiglas! A 51x100 inch sheet of geunine duPont Lucite 1/4" Plexi is now $250, while a 4x8 foot sheet of genuine duPont Lexan is only $205.

    Abrasion-resistant Plexi (probably the best choice for this application, as it is both abrasion and chemical resistant) is crazy expensive, at about $750 per sheet.

    Regards,
    Ray L.

  13. #13
    Join Date
    Oct 2011
    Posts
    477

    Re: PCNC Enclosure update

    Really looks GREAT!

    I decided to buy the Tormach Enclosure, we can not afford to take the machine out of service long enough to build an enclosure plus an enclosure of the quality you have made is outside my capabilities.

    I am however interested in your use of drawer slides. The door slide or "drag" mechanism of the Tormach leaves room for improvement.

    nitewatchman

  14. #14
    Join Date
    Aug 2011
    Posts
    135

    Re: PCNC Enclosure update

    Quote Originally Posted by nitewatchman View Post
    Really looks GREAT!

    I decided to buy the Tormach Enclosure, we can not afford to take the machine out of service long enough to build an enclosure plus an enclosure of the quality you have made is outside my capabilities.

    I am however interested in your use of drawer slides. The door slide or "drag" mechanism of the Tormach leaves room for improvement.

    nitewatchman
    Thanks. It was a ton of design time. I don't think tormach enclosure will work in my location due to height restrictions. Also I feel their price is a bit inflated


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  15. #15
    Join Date
    Jul 2004
    Posts
    1424

    Re: PCNC Enclosure update

    Quote Originally Posted by mioduz View Post
    Also I feel their price is a bit inflated
    How much did it run you to get all the work done?

    Nice job, looks very professional.

  16. #16
    Join Date
    Aug 2011
    Posts
    135

    Re: PCNC Enclosure update

    Quote Originally Posted by tmarks11 View Post
    How much did it run you to get all the work done?

    Nice job, looks very professional.
    came to about 1k in materials. Once it's all done I'm thinking about offering the plans for sale so you guys have an alternative to the tormach. next project is to mount a monitor/keyboard station

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  17. #17
    Join Date
    Aug 2011
    Posts
    135

    Re: PCNC Enclosure update

    It's getting there
    Click image for larger version. 

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  18. #18
    Join Date
    Nov 2010
    Posts
    291

    Re: PCNC Enclosure update

    Looks good! How are you mounting the doors?

  19. #19
    Join Date
    Oct 2010
    Posts
    1189

    Re: PCNC Enclosure update

    Looks nice

  20. #20
    Join Date
    Aug 2011
    Posts
    135

    Re: PCNC Enclosure update

    Attachment 245800Attachment 245800

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    Attached Thumbnails Attached Thumbnails uploadfromtaptalk1408259303929.jpg  

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