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Thread: Macap M4D Modification

  1. #1
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    Macap M4D Modification

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    Hello,

    Am a new owner of the Macap and have been using for a week, I also have the tendency to pull things apart to see if they can be improved.

    Taking apart the top plastic housing where the controller is contained revealed how the grinds drop down into the PF.
    There is a horizontal plane that is about an inch which the grinds have to travel before dropping down, this for me meant a lot of wastage that could possibly be prevented.

    From what I can see there is a horizontal aluminium sheet that cuts the grinds in half to help reduce the clumping. There is also a top sheet that coves the "tunnel" to stop grinds straying. I tried removing the middle plate and clumping turned to even larger boulders.
    Another thing I noticed is that the grinds tend to form a block to the left side, almost like a slab of meat being pushed out. This is where the majority of the clumping occurs. I have highlighted in red the area where this happens in the attached photos.

    My planned modification was to remove the middle horizontal aluminium sheet and place a couple of mesh like filters that hopefully will break down the grinds before dropping into the PF.

    As for the wastage issue I am still thinking of a way to help, perhaps angle the chute or even replace it with something else that has a shorter travel distance.

    Any one else had a look inside the M4D?







  2. #2
    Coffee+carbon=heaven Mono's Avatar
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    Re: Macap M4D Modification

    Hi Mr DC. Ive had my M4D for about 18 months and I havent looked to make mods ::) [apart from the hopper]...........but am always open to suggestions. :)

    Steve

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    Re: Macap M4D Modification

    It looks like the thin metal divider is only connected at one end. I have to wonder if it vibrates during operation to help loosen grinds/break clumps?

    I suspect the clumping to one side is due to the direction of rotation of the burrs forcing the grinds into that side of the chute.

    Im one for modifying things too, but on something with the reputation for quality that Macap has, Id want to have a pretty good understanding of the function of something before I try to "improve" it.

    ;)

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    Re: Macap M4D Modification

    In terms of hopper, is there alternative ones we can use?

    Would be keen to see something that would work with the click clack lids as I had on my Rocky ;D

    But yeah, end of the day it is all trial and error and some fun thrown in :)

  5. #5
    Senior Member artman's Avatar
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    Re: Macap M4D Modification

    Just thinking out loud, I wonder why all the grinders I have seen have the "chute" from the burr area horizontal (which retains grinds)? Why not have it angled down to minimise the retained amount? If the grinds fly off horizontally off the burrs and hit the roof of the angled section, this might help reduce clumping also?

    Cheers

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    Re: Macap M4D Modification

    Maybe even tangentially aligned with the burrs?

    Perhaps messier that way?

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    Re: Macap M4D Modification

    Quote Originally Posted by 6F50664750504B414961220 link=1327812294/0#0 date=1327812294
    My planned modification was to remove the middle horizontal aluminium sheet and place a couple of mesh like filters that hopefully will break down the grinds before dropping into the PF.
    I like the idea of that if it was going to help with clumping...one thing Id wonder is if it would make it easier to jam up the grinder if it cant push the grinds through the mesh?

  8. #8
    TC
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    Re: Macap M4D Modification

    Maybe a change will improve things, however in all likelihood, it will make things worse. When these things get designed and then tested, a whole heap of variations are tested and the best of them is chosen to deliver the best all round performance possible.

    New owners- one thing to keep in mind is that once you have opened up and or modified anything involving the dosing path or electronics, the importer is well within his rights to refuse warranty. I guess in this case, its akin to playing with the driveline and ECU of your car.

    I often wonder if these are simply academic pursuits? If a modifier cant pick a difference blind, why bother?* :-?

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    Re: Macap M4D Modification

    Quote Originally Posted by 132C1A3B2C2C373D351D5E0 link=1327812294/0#0 date=1327812294
    My planned modification was to remove the middle horizontal aluminium sheet and place a couple of mesh like filters that hopefully will break down the grinds before dropping into the PF
    The theory sounds good......but, in the case of the Mazzer Kony-E, there is a simlilar mesh designed to do just what you have described yet many users have removed it as they find it works better without it!

    Personally, having owned an M4D for 2 years I did find a little clumping but nothing worth warranting a modification of the machine.

    If you find that the M4D is not meeting your needs then perhaps another grinder is the way to go.

    Either way, best of luck.

  10. #10
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    Re: Macap M4D Modification

    Quote Originally Posted by 4148561312220 link=1327812294/8#8 date=1327876424
    there is a simlilar mesh designed to do just what you have described yet many users have removed it as they find it works better without it!
    Most have ultimately replaced some or all of it as they find that there is far more static without it. ;)

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    Re: Macap M4D Modification

    Im in the strangely eccentric (for this forum) "...if it aint broke..." group of people.

    As an aside and judging from the above photos, if this is a new grinder and there is any possibility it originated through my own import system, then I am afraid the guarantee has already gone up in a puff of smoke.

    Before anyone jumps in in a flurry of emotion before engaging brain to keyboard, kindly note it had to be said plainly and openly by someone. Once the guarantee is gone, all are free to "improve" the equipment in whatever way they wish to, entirely at their own responsibility.

  12. #12
    Coffee+carbon=heaven Mono's Avatar
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    Re: Macap M4D Modification

    Quote Originally Posted by 053126302B1C002C25252626430 link=1327812294/10#10 date=1327882200
    Im in the strangely eccentric (for this forum) "...if it aint broke..." group of people
    ;D ;D ;D ;D

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    Re: Macap M4D Modification

    Quote Originally Posted by 5164696E5A466A63636060050 link=1327812294/9#9 date=1327879316
    Most have ultimately replaced some or all of it as they find that there is far more static without it.
    Glad I never removed mine, though not one for tinkering, especially on a $2000+ piece of equipment which would void my warranty. There might be a lesson in there somewhere ::)

  14. #14
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    Re: Macap M4D Modification

    Nothing is simple in the world of industrial design. Mazzer own the patent for the using a mesh screen on the output chute. Perhaps its a feature that had to compromise on?




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