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Thread: Non pressurised filters for thermoblock machine?

  1. #1
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    Non pressurised filters for thermoblock machine?

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    Im trying to get the most from my el cheapo Sunbeam thermoblock machine (still pining for a Silvia). I was wondering if there would be much benefit from sourcing a non-pressurised filter basket, assuming I can find one that fits.

    I find if I grind fine enough to get a shot in ~25 sec then the coffee tastes worse than if I grind courser & runs out faster.

    Ive heard people getting better results from Saeco Vienezia, et al., by doing this but will my machine (EM3500) benefit in such a way (assuming grind etc is suitable)?

    Cheers

    DH

  2. #2
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    Re: Non pressurised filters for thermoblock machin

    obvious question: what coffee are you using?

    I found great improvements (ie, lots more flavour and beautiful crema) by de-pressurising my sunbeam filters. The single is tricky - very fine line between gushing and choking - but the double is great.

  3. #3
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    Re: Non pressurised filters for thermoblock machin

    Im using beans from Cosmorex called Rio Gold ("An espresso style roast with brisk full-bodied flavour. Smooth and strong Italian style at its best."). I have a Russell Hobbs burr grinder that is pretty crap - grind is inconsistent and doesnt grind fine enough. Im looking to get the Sunbeam 0480 soonish.

    Exactly how did you de-pressurise your filters?

    I also find I get better results from the double filter.

    FYI, I only use the machines on weekends as my work has a commercial Elektra* + Mini Mazzer for staff use (work in IT). So Ill upgrade my machine when I change jobs ;-)

    * same model that appears in Smallville - Lanas cafe.

  4. #4
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    Re: Non pressurised filters for thermoblock machin

    de-pressurised by cutting off the bottom in a lathe (good to have friends at work :)) Theres some pics of it if you search here.

    Personally I dont notice much in Smallville except Kristen Kreuk...

  5. #5
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    Re: Non pressurised filters for thermoblock machin

    What the heck, Ill give it a go too!

    I was thinking about simply making the hole bigger by drilling with a metal bit. It probably doesnt need to be very wide... only enough so that it doesnt restrict flow so as cause back pressure. Ill try 3mm first and try not go through both layers ;-) On second thought I might use the drill press at work.


  6. #6
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    Re: Non pressurised filters for thermoblock machin

    Theres only about 2-3mm between the layers. A pointed drill will be almost impossible to use - theyre never good through thin sheet anyway.

    If you have a lathe there, get a machinist to part it off for you. Or find a nearby machine shop and give someone a couple of beers to do it for you.

  7. #7
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    Re: Non pressurised filters for thermoblock machin

    Behmor Brazen - $249 - Free Freight
    I did similiar with my Breville, and with freshly ground fresh beans it was capable of producing good drinks, better than with the pressurised pf.

    Grinder is also another important issue.
    I was heaps better off when I got Rocky, (the Sunbeam wasnt available then but it should do wonders for you, along with a non pressurised pf)

    I finished up with two un-pressurised baskets, one was from another breville steam machine, and would just take 14 grams, for a double, or was OK with 10 grams for a single, if you ground a bit finer.
    The other was modified double basket that came with Breville, which could take a bit more than 14 grams.
    I carefully hacksawed accross the outer skin and peeled it off, its very tedious.
    IF you can get someone to skim it off in a lathe it would be best, but dont try to drill it as Matt King indicated.



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