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  1. #1
    I am interested in making a simple plastic injection mold tool and was wondering if there are any good mold making forums? I know cnczone used to have a mold making section but it seems to be closed for ever. :(
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  2. #2
    Hi Gav, I dont know of any myself but im happy to add one here to accommodate?
    .Me

  3. #3
    Yes please Lee that would be great.

    Cheers
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  4. #4
    m_c's Avatar
    Lives in East Lothian, United Kingdom. Last Activity: 8 Hours Ago Has been a member for 9-10 years. Has a total post count of 1,839. Received thanks 192 times, giving thanks to others 5 times.
    It's a bit of a specialist area, and I'm not aware of many people visibly online who really know about the subject.
    I've seen it occasionally discussed in threads over on homeshopmachinist.

    As for plans, there used to be a couple sites with plans for basic machines, but last I checked they'd disappeared.

  5. #5
    m_c's Avatar
    Lives in East Lothian, United Kingdom. Last Activity: 8 Hours Ago Has been a member for 9-10 years. Has a total post count of 1,839. Received thanks 192 times, giving thanks to others 5 times.
    PS. if searching, remember to use both spellings - moulding and molding

  6. #6
    Nice idea to get a section going ive got an injection moulder also,i havent used it yet,but plan to soon .
    there aint that many forums covering the subject and none UK that i could find.

  7. #7
    There's currently an article running in the Model Engineers Workshop magazine for a basic moulding machine. You'll need a copy of edition 211 and 212 for the first 2 articles.

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  9. #8
    Plastic Injection Moulding Machine Battenfeld BSK , 30 Ton,Year 1982, hrs 20546 | eBay


    I have my eye on a machine like this. They seem to be relatively cheap to buy in comparision to the size and complexity of the machine, I guess it like modern vs old cnc machines once they get past a certain age they become commercially unviable and very cheap to buy. Looks like it could be fun to mess around with, this inspiring video from America show what can be done with some small blocks of alu, cnc mill and an old press.

    How to- home injection molding - YouTube
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  10. #9
    m_c's Avatar
    Lives in East Lothian, United Kingdom. Last Activity: 8 Hours Ago Has been a member for 9-10 years. Has a total post count of 1,839. Received thanks 192 times, giving thanks to others 5 times.
    The big issue is the power supply needed to run an injection moulding machine. Even a small industrial machine generally takes 10kw, which although is only roughly 40A on a single phase supply, they're all three phase machines, and doesn't take into the account the surge of the motor(s) starting/stopping, so you really need somewhere with a proper 3phase supply.
    Which pretty much means there's a very small market for old secondhand machines, and the prices reflect that.

    I am hoping to buy one soon, but need to get a suitable power supply first!

  11. #10
    Quote Originally Posted by m_c View Post
    The big issue is the power supply needed to run an injection moulding machine.
    I did it, I had the 3 phase socket installed and sat a 25 ton Arburg Allrounder in front. Turned on the heaters for a mo' to see if they got warm and put 6 units on the electricity meter. I love it

    I keep trying to make a mould, you can get the bits from dmsdiemould or Bergers. I've been reading lots of stuff and I think I now know how a screw moulder works, it's more complicated than I first thought but not impossible.

    If anyone else is bonkers enough to give it a go I think a separate section is a good idea because it could motivate me. OTOH, if it's only me, not interested.

    There is a forum on plastics.com if you dig, but it's all funny handshakes, secret jargon and closed shops. You won't get any of the basics from there, ask them how to size a gate and they will cold shoulder you.

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