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Thread: Build your own knock box (knock tube)

  1. #1
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    Build your own knock box (knock tube)

    Not sure if this has been done/posted before, but here is how I made a knock box. Next time I would make it much shorter, say 15cm, and cut the top at an angle before splaying it.
    Greg


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    Re: Build your own knock box (knock tube)

    Apply heat


  3. #3
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    Re: Build your own knock box (knock tube)

    Splay the top


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    Re: Build your own knock box (knock tube)

    Insert 12mm dowel with 13mm tube. ( You have to thread the tube.)


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    Re: Build your own knock box (knock tube)

    Paint it And start knocking out those pucks.


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    Re: Build your own knock box (knock tube)

    Nice one Greg, looks great.

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    Re: Build your own knock box (knock tube)

    Ive made a couple of DIY knockboxes based on plastic food containers such as decor or systema.

    I went for these because they seal - important to me because I keep the container in a cupboard, and the lid retains the steam and smell!

    The first one was made with a large bolt and clear rubber hose (all siliconed in place). This lasted several years before cracking in one spot and generally looking a bit feral.

    To be honest, the hose was a bit stiff and lacked bounce. This meant I was timid about giving the pf a decent knock, so the puck didnt come out as well.

    The new one (plus a replica for my folks) I went upmarket and bought the bar and rubber as spare parts from a proper domestic knock box . A bit more expensive, but much easier and neater result.


    Alan

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    Re: Build your own knock box (knock tube)

    Quote Originally Posted by 64514C44444F4650230 link=1162705311/22#22 date=1326412704
    Apply heat

    Thats a pretty sick looking heat gun youve got there! Did the rest of the case end on the floor, or inside your breadmaker?

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    Re: Build your own knock box (knock tube)

    If I was a surfer I might take that differently ... Its an Aldi one used once a week for 2 years. My roaster is a Kenwood with a stainless bowl and makeshift lid( who would have thought...) so all the heat funnels back over the heat gun nozzle. Greg.

  10. #10
    CoffeeSnobs Owner Andy's Avatar
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    Re: Build your own knock box (knock tube)

    Excellent "how to" post Groggles!

    What sort of paint / prep did you have to do to get it to stick to the PVC?

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    Re: Build your own knock box (knock tube)

    I gave the outside a quick scrub with some fine sandpaper and just used normal wallpaint ... there were no issues with the paint adhering - it adhered well to the inside which did not get sanded.
    Cheers

    Greg

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    Re: Build your own knock box (knock tube)

    Hi Greg, great design, Ive got something similar in progress, but im wondering what sort of tube you fed over the dowel?
    Cheers
    Luke

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    Senior Member David8's Avatar
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    Re: Build your own knock box (knock tube)

    Quote Originally Posted by 66504E574947220 link=1326412623/11#11 date=1334538862
    Hi Greg, great design, Ive got something similar in progress, but im wondering what sort of tube you fed over the dowel?
    Cheers
    Luke
    Its often just a piece of garden hose. Looks like greg has used some clear hose, but regular green hose would be fine!

    David

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    Re: Build your own knock box (knock tube)

    Ok, thanks! So the garden hose works out not too hard/not too soft? Im happy to buy something from the local hardware store if results are better/safer for my pf. If not my garden hose loses a few inches then!
    Luke

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    Senior Member sidewayss's Avatar
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    Re: Build your own knock box (knock tube)

    Great post. :)

    I will be making a floor standing version ( with the right length for the garbage bag) for the restaurant (with angled top) now that the old one is falling apart.
    Will use some heating for the hose to stretch and fit.

    Gary at G

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    Quote Originally Posted by Drluke View Post
    Hi Greg, great design, Ive got something similar in progress, but im wondering what sort of tube you fed over the dowel?
    Cheers
    Luke
    you can get all different sizes from your local hardware store (-:

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    Behmor Brazen - $249 - Free Freight
    Good one Greg, looks like i've got something to so this weekend. :-)

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