• Introducing The RAFINO - Coffee Grind Refining System

    https://www.youtube.com/watch?v=QVB0hq942_Y

    The Rafino is a coffee refining system that delivers the most consistent grind with micron level precision.

    Click here to visit the Kickstarter campaign and learn more about The Rafino Coffee Grind Refining System
    Comments 123 Comments
    1. jimbojohn55's Avatar
      jimbojohn55 -
      So if it could be attached to a dosing mechanism with agitated plates that channels over and undersized particles to the side .. it could be good on a cheapish grinder ?
    1. Toby-IOM's Avatar
      Toby-IOM -
      I just watched the video and I must say it looks like an innovative yet simple idea. The chaps look as though they certainly have a passion for what they are doing, thats for sure.

      My one and only reservation would be for the amount of wastage that the user (us) would suffer. However, if it gives you a fantastic coffee, maybe the waste would be justified?
    1. Dallah's Avatar
      Dallah -
      I'm going to give it a fling. Well assuming it gets funded. Seems a logical idea.
    1. Toby-IOM's Avatar
      Toby-IOM -
      Has there been any mention of price points yet, @Dallah?
    1. jeebsy's Avatar
      jeebsy -
      $95 Canadian i think
    1. The Systemic Kid's Avatar
      Cheapest is 35 CND for the two sieve (400 & 800) sieves.
    1. The Systemic Kid's Avatar
      Factoring in shipping to UK, the 400/800 combo comes in at around £26.00. Worth a punt.
    1. MWJB's Avatar
      MWJB -
      Quote Originally Posted by Toby-IOM View Post
      I just watched the video and I must say it looks like an innovative yet simple idea. The chaps look as though they certainly have a passion for what they are doing, thats for sure.

      My one and only reservation would be for the amount of wastage that the user (us) would suffer. However, if it gives you a fantastic coffee, maybe the waste would be justified?
      There shouldn't be a lot of wastage. You don't have to discard the fines & boulders. You can regrind the boulders, whilst setting the grinder coarser to minimise fines.

      For example, a good grinder set to ~570um median would have something like 60-70% fall outside of the 400-800um sieves. With Rafino you could set the grinder coarser (giving less below 400um) then regrind the boulders and halve what was originally outside the range.

      For immersions, you might only want to isolate/regrind the boulders & keep all the fines?

      You can choose what you lose or keep. Even if you keep it all, other people with the same sieves as you can compare grind settings by what weight lands in each sieve.

      I don't regrind at the minute & have dialled in a regular kitchen sieve & my grinder to lose the biggest 10-15% for Sowden brews... the brews taste better and it's a relatively small proportion I lose, when you look at those huge chunks in the sieve, you really don't feel like putting them back in (whole). It also helps keep things consistent as grind setting drifts with time/use & even with bean. I hate wasting beans & tend to use everything up, but I'd rather lose a little of the ground weight than keep it all in & a whole brew suffer.

      There are possibilities & benefits beyond the intended use.
    1. Dallah's Avatar
      Dallah -
      £115 CDN for the full set of sieves (called Barista) including shipping to UK. CDN is in the dumper and is unlikely to regain strength unless the price of oil goes back up. Oil going up is very unlikely with sections against Iran being lifted and Saudi would rather lose on the price as opposed to market share.
    1. PPapa's Avatar
      PPapa -
      Quote Originally Posted by Dallah View Post
      £115 CDN for the full set of sieves (called Barista) including shipping to UK. CDN is in the dumper and is unlikely to regain strength unless the price of oil goes back up. Oil going up is very unlikely with sections against Iran being lifted and Saudi would rather lose on the price as opposed to market share.
      Canadian Pounds...?

      It seems like I was thinking of USD, so it's cheaper than I previously posted. My bad!
    1. MrShades's Avatar
      MrShades -
      I've taken a punt..... Should be entertaining anyway, as long as it gets funded and the 'reward' is actually produced (I've backed a few that I've lost everything on!).
    1. Dallah's Avatar
      Dallah -
      Quote Originally Posted by PPapa View Post
      Canadian Pounds...?

      It seems like I was thinking of USD, so it's cheaper than I previously posted. My bad!
      Canadian dollars. At today's exchange rate the $115 CDN is £61 GBP
    1. Dallah's Avatar
      Dallah -
      Quote Originally Posted by MrShades View Post
      I've taken a punt..... Should be entertaining anyway, as long as it gets funded and the 'reward' is actually produced (I've backed a few that I've lost everything on!).
      I'm hopeful as the manufacturering is not all that difficult or cutting edge. Just a new and better application of current capability.
    1. PPapa's Avatar
      PPapa -
      Quote Originally Posted by Dallah View Post
      Canadian dollars. At today's exchange rate the $115 CDN is £61 GBP
      Yeah I was just making fun of £XX CDN notation. :P
    1. Dallah's Avatar
      Dallah -
      Didn't even notice. Damn autocorrect
    1. ShortShots's Avatar
      ShortShots -
      I'm certainly intrigued, might give it a punt
    1. jimbocz's Avatar
      jimbocz -
      I'm really curious and I've got some questions for the knowledgeable--

      What are people's opinions on if this will make my £150 grinder taste like a £1000 grinder? Is consistent size the only thing?

      If I was always grinding espresso for the same machine, would I always want the same size sieve? What size would that be?

      I'm willing to fund the Kickstarter but if that fails or I'm impatient, seems like I could get a sieve that would work the same from a lab supply. Has anyone tried this?
    1. MWJB's Avatar
      MWJB -
      A £1000 grinder, or even a £2000 grinder makes a grind distribution. This means that at any setting you will have some very tiny particles under say 50um and some big particles. The better the grind distribution, the smaller the relative proportions these small particles & boulders become.

      With sieving, you can remove parts of the distribution, it's a different ball-game.

      I wouldn't be trying to remove fines from espresso grind personally, maybe aim for the boulders, these might be above 500um to 900um depending on your grinder & what you are aiming for. Perger suggested sieving out anything over 500um.

      Lab supply sieves are much more expensive than Rafino, a single 3" micron sieve is around £50 plus VAT (about $95 Canadian).

      I found some sized chef's sieves at about £30 each, but they're huge (20 & 30cm)
    1. NickdeBug's Avatar
      NickdeBug -
      I think I will keep an eye in this thread and see what folk think if and when the receive their investment rewards.

      If they make that much difference then I can always invest in a set post-launch, but it doesn't really fit with my faff-free coffee philosophy so gut feeling is that they are not for me.

      When it comes down to it I am really not that committed enough to go chasing tiny incremental gains, but hats off to those that are - even more so if they can actually tell the difference.
    1. foundrycoffeeroasters.com's Avatar
      I'm in [emoji3]
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