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Thread: Restoring an old Quickmill Omre Grinder

  1. #1
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    Restoring an old Quickmill Omre Grinder

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    Hey I got hold of an old Quickmill Omre grinder apparently used in a cafe in the 80's. It's in reasonable condition although very dirty. It's missing the doser glass, the forks that hold the portafilter plus also a grinds tray. I cant seem to find any pictures of this particular model nor any parts although I haven't done extensive research on this yet as I'm still in the dissasembly and cleaning phase. Can any snobs offer some thoughts on sourcing the missing parts and any dissasembly instructions relating to getting access to the burrs which is proving tricky at the moment. I've given it a bit of inox overnight to try an persuade it tomorrow. Here are some pics..










    Last edited by Javaphile; 13th January 2013 at 10:28 PM. Reason: Fixed image links

  2. #2
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    Omre.

    For spares, if you are in Australia, call Cantarella Bros. As far as I know they were the importers. That doesnt mean they will have any after so long, but it would be the first place to try.

    Take care of the unique glass hopper, because you may never get another...

    Someone else posted something about an Omre grinder in here some time back, so better do a search.

    HTH

  3. #3
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    Thanks fresh coffee. I am in Australia so I will try the importers you mentioned - thanks for the tip.

    It may be me but I've tried searching for omre threads or even any other remotely related grinders and have dredged up very little. I found a little info on another well known website but was largely underwhelmed. I tried again after your suggestion with little success.

    Has anyone tried the path of getting some custom plastic to fit the doser chamber? What do you think the likelihood of using another brands doser plastic?

    I'll keep tinkering away and see how far I get....

  4. #4
    CoffeeSnobs Owner Andy's Avatar
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    Has anyone tried the path of getting some custom plastic to fit the doser chamber?
    Yep, thin, clear perspex cut to size and put in place works fine.

    ...but if you happen to find parts let me know. I have the same grinder with the same problem so either they were perspex and went brittle or they were glass and broke.

    My grinder is in the "wish I had more time to play" queue. Pretty similar to yours but a different base. I'll take some pictures when I dig it up.

  5. #5
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    Just a thought.....if you are not having any joy in Australia try coffee machine collector & trader Enrico Maltoni at:
    info@espressomadeinitaly.com

    He may be able to point you in the right direction, if indeed there is one in terms of Omre....I used to have a "twin set" (a bench grinder version similar to yours in Siamese twin format), but it went way back in the mid eighties and if memory serves correct parts may have been a problem even then.....

  6. #6
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    Thanks for the tips again.

    I'll see how I go with the importers first. The perspex might be the only option. If I can get one made and its not prohibitively expensive Ill see if you want one too Andy.

    Anyone know how to dissasemble the burr section and doser? Im trying not to break it..

    More photos:







    Last edited by Javaphile; 13th January 2013 at 10:31 PM. Reason: Fixed image links

  7. #7
    Senior Member chokkidog's Avatar
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    Hi Pretzal,

    Great project!
    Here are some suppliers of glass/ borosilicate tubing that may be of help with the doser chamber.
    Amcor are bottle manufacturers, I'm not sure if they do tubing but may have a bottle size that would fit, if cut down.

    Cheers and good luck! 8-D


    Minson Art Glass - Supplies

    Tubing - Glass tubes for pharmaceutical, laboratory, electronics, environmental technology, lighting and industry. | SCHOTT AG http://

    Amcor Glass

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    Thanks chokkidog,

    Plenty of leads there. I'll also try something local too in Adelaide and see what turns up. Appreciate the thoughts everyone.

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    Ok I got the burrs apart with a bit of persuasion and logic. They aren't very sharp not surprisingly.



    The only one left is the doser lever mechanism. I'm trying the allen key nut from below. Anti-clockwise rotates the doser mechanism and clockwise I cant get it to move at all. Can anyone shed some light on the likely disassembly?
    Last edited by Javaphile; 13th January 2013 at 10:31 PM. Reason: Fixed image link

  10. #10
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    Acryllix Plastics in Welland may be of help, they have all manner of perspex material. Pretty sure the Mazzer part could be made to fit with a bit of persuasion, it's available from CoffeeParts, part no. 702320.

  11. #11
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    Thanks Rick,

    I'll give them a try. I supplied the approx measurements of the doser
    lens to coffeeparts but unfortunately they don't have anything
    suitable so I'll try the importers, quickmill then the custom option.
    Coffeeparts look like they have the burrs and a grinds tray that will
    suit plus maybe the portafilter holder that might work but I think
    I'll keep trying to find an original portafilter holder rather than go
    the modified path just yet.

    Appreciate all the input.

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    OK so a little update on the progress...

    I've managed to source some Burrs they are on the way from the US from a guy who has one. He also has an original Portafilter holder and supplied a photo so at least I know what they look like now. He has also offered to draw up an engineering diagram so I can get one fabricated which will be great.



    I've been doing a fair bit of cleaning...



    Very happy with this one once I managed to get rid of a tonne of gunky silicon out of the throat of the grinder. I'm going to have to support the glass hopper with something as there is a bit to much movement without the silicon...



    The Doser is probably the worst part of the grinder thus far - it will probably need to be re-chromed is its a bit flaky...



    I've managed to get the Top Burrs off but am still stuck with 2 screws on the bottom burr carrier. I'm double teaming it with a freezing spray then followed by Inox. I'll just have to keep persevering....



    It looks as though there are no deal breakers to being able to complete this now. Hopefully I dont run out of steam myself

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    Well an update to this thread - things are still moving along albeit slowly now as other day to day life has taken precedence.

    The burrs are still in transit from the US. I have sourced a sheet of polycarbonate from Acrilix Plastics that I intend to use to fix the missing doser lens - we'll see how that goes as the plastic will need to be bonded/riveted which the original one seems to be. It's that or buying a 3mm thick clear plastic tube (120mm diameter) and cutting out a small sliver to reduce it to about 117mm that I require. Less certain about this option as the internal diameter might be insufficient to allow the doser sweeper to do its thing.

    The chromers have the pieces I'm getting quoted to re-chrome. It seem the parts are aluminium which doesn't take to being re-chromed very well. I may have to get the chrome removed and polished instead. They will call me tomorrow to discuss my options.

    Just missing now is the portafilter holder, but this looks relatively straight forward to fabricate if required.

    The stainless steel body polished up a treat by hand so no need to get this professionally done as the improvement would be barely noticeable for a large investment.

    I'll post some more photos when the doser section is finished.

  14. #14
    Senior Member robusto's Avatar
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    Congrats, Pretzal, looks absolutely beautiful. Presumably no wobble in the motor and bearings which may spoil things for you? Hopefully not.

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    Hopefully not! It sounded fine when I initially switched it on and tested it - Once its fully cleaned I'll assemble it and assess this more.

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    Just a few more photos of the main body section all cleaned up just awaiting the doser.



    fg1972 likes this.

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    looks amazing so far mate, looks too nice to actually put coffee in the thing and use it ya know now...

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    Still waiting for the Doser parts to return but in the mean time, the new burrs have arrived and even visually you can see the difference in sharpness between the 2 sets.

    The first picture is of the old burrs:



    These are the new 54mm burrs:



    The next photo is of the disassembled doser mechanism. Quite a few parts - with plenty of springs, bearings and screws!



    The last one if of the shot counter - I took this out and gave it a bit of a clean up. It wasn't counting when i took it out, but it appears that the black lever pin just needed tightening so that the ratcheting mechanism worked. It's a little cleaner now. Shot counter said 2132 before I started cleaning. Hard to know exactly how many doses have actually occurred though.



    Turns out that the original doser lens appears to be a flat piece of plastic that is riveted together to this piece of metal with a twist that also serves to break up the grinds as they exit the chute.

    Last edited by Pretzal; 30th January 2013 at 03:03 PM. Reason: more photos added

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    Ok, I got the parts back from the chromers - on the whole, really impressed! The outer sections were chromed and where the grinds come into contact with the doser chamber and sweepers it has been tinned for food safety reasons.



    Items still to tackle are the doser lens which I was waiting until these parts returned so that I could cut the polycarbonate lens to size and also the portafilter holder. I've been having trouble finding someone to fabricate the portafilter holder. The only quote I've had so far is $125 + GST which does make it quite prohibitive unfortunately. I've put a WTB in the for sale section to see if someone has one lying around they no longer need - this is quite a long shot but, you never know.

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    Another update on the progress...

    It has been a little slow of late, the bottom of the doser had to go back to the chrome shop for another try as there was an 'airlock', which left an unsightly nickel spot. All good now though.

    The doser lens has been cut, shaped and glued and has turned out a very good fit - I just need to tidy up the glue spots at the join a bit to make it more presentable.

    I've ordered the portafilter holder from a laser cutting shop. I have the grinds tray which is an acceptable solution but I'm not entirely happy with it as is because it can move around a bit too much.

    I guess its now time to fire it up and see what its' like. I probably do so in the next couple of days when I get time. Here are some photos of the shiny almost finished product...






  21. #21
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    wow mate just wow

    that looks stunning almost too nice looking to use it, interested to see how good the resulting coffee product is from it (likely once the burrs have bedded in a bit)

    all that chrome and lovely glass... I love shiny new things, but I love shiny restored things even more

  22. #22
    Senior Member flynnaus's Avatar
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    Agreed - top rate resto . I think you'll need to don the white gloves prior to grinding
    phrostyboi likes this.

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    Amazing, congrats!
    Looks a total treat, love the styling and design, especially the 50's 'lolly shop' look to the bean hopper!
    Nice work.

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    Thanks very much for the kind words, I might try and take a video of the 'first grind and dose'.
    mwcalder05 likes this.

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    Ok so I finally got an hour or so to put it through its paces. I have only put about 200grams through it trying to dial it in. I've managed to get it pretty close - just trying to work out a technique as this is my first doser grinder and I haven't yet got the portafilter holder made up.

    It certainly looks shiny next to the Vibiemme and the doser mechanism seems smooth and sweeps fairly clean I think.

    I certainly got some very nice looking pours - tonnes of crema, from only day old beans and tried it as espresso (which I don't normally drink but am trying to broaden my palate). The grinds seemed very fluffy.

    I've got it on the kitchen bench and will play with it more over the coming weeks when my work load reduces a bit from what it is now.

    Of course, I have more photos....





    This last one is a bit of an action shot. I thought there is way too much shiny stuff not being used the way its supposed to so this one's during the first time frenzy..

    phrostyboi likes this.

  26. #26
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    I have a very similar Quickmill Omre and cannot seem to adjust the grinder calibrations -that is, the dial stuck as I have not changed the grind in some time. Can you instruct me on how I might fix this without completely taking apart the grinder? Any help is greatly appreciated. You have done a beautiful job on your restoration and I applaud your results. Thanks

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    This post is quite old and I no longer have this grinder, so I can't tell you with authority but I'll try.

    I'm not 100% sure I understand what you're asking but if I understand you correctly you want to know how to remove the top burr so you can clean the grinder?

    If so, once it has been disconnected from the power supply, you should try and twist the top burr carrier (the part with the red numerical scale) anti-clockwise when viewed from above and keep going until it comes off completely. You should then be able to clean the bottom burr and grind chamber.

    Is this what you were asking?



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