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Profitec Pro 64 - Question on the funnel
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Ah yeah good point hehe, I mean I did single dose with my Rocky grinder for years, but certainly there was channelling every now and then, WDT definitely did help with that. And that's the main thing ay, a bit of tinkering fun
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Yes and no...Originally posted by simonsk8r View PostAm surprised you still need to WDT with the Profitec grinder, but yeah fair enough it can definitely help.
If you know of anyone who can single dose without wdt and channelling, let me know[emoji8]. There lies the answer to the million dollar question!
Any grinder, regardless of flat or conical, which grinds at rpm of anything above 1000 will grind too quickly. Unless you go for a minuscule burr mm that is.. Grinds coming out at high speed is usually controlled by them being backed up by clump buster /anti static screen. So without the grid /screen, the only workaround is to reduce the burr rpm, and slow down the grind exit speed. Only then, how the grind falls into the basket becomes manageable.
All my tinkering around has been at hobby level, nearly cost free. I just want to make sure (before going down the speed controller /variac route) that all possibilities cheaply available have been exhausted [emoji41]
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Ah yep fair enough hehe, yeah seems to be a compromise. And my priorities seemed to keep changing too, then eventually I thought that little extra bit of cleaning didn't matter to me, as long as great coffees are still being produced.Originally posted by u2jewel View PostUntil a new, fresh concept or inspiration comes along, I'm defeated at the moment on my ultimate objective ; to be able to single dose with zero retention AND make the grinds fall neatly without the need for wdt AND no need for cleaning the funnel.
It's a game of compromise at the moment, with my idea of priorities changing daily!
The photo from above will remain in that iteration until a fresh new idea pops up. It does all of above, but leaves me needing to wdt (redistributing inside the portafilter basket by stirring) because without it (dosing then immediately tamping) creates occasional channelling.
Am surprised you still need to WDT with the Profitec grinder, but yeah fair enough it can definitely help.
Has been cool hearing of your ideas for sure
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Until a new, fresh concept or inspiration comes along, I'm defeated at the moment on my ultimate objective ; to be able to single dose with zero retention AND make the grinds fall neatly without the need for wdt AND no need for cleaning the funnel.
It's a game of compromise at the moment, with my idea of priorities changing daily!
The photo from above will remain in that iteration until a fresh new idea pops up. It does all of above, but leaves me needing to wdt (redistributing inside the portafilter basket by stirring) because without it (dosing then immediately tamping) creates occasional channelling.
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Yeah I think it depends regarding clumps... My theory is that clumps affect proper distribution which therefore affects the shot. If there's a boulder in there it makes not only the grounds around it to move less freely to get into the crevices (filling up empty space), but the boulder itself can just stay put and not be free to move, and the adhesion of the clump you'd think would have some degree of resistance to water.. This of course depends on distribution method, but I reckon they have an effect.. just been playing with that alot regarding distribution methods and breaking up clumps etc, finding that overall it has been more effective shots from breaking up clumps but then again depends on the 'hardness' of the clump and whether it will break easier. And roast level I think is a factor in terms of clumpiness. But mostly all theories anyway, I don't know what I'm talking about for sure haha!Originally posted by wattgn View PostThe odd journey back and forth between Doser and Doserless. The Doser helps to break up clumps, the grid helps GOD grinders to break up clumps before they hit the basket.
A Doser mixes the grind which is great, Doserless some people even go so far as to get out a whisk to break up the clumps.
I personally don't think that the clumps make a big difference to a shot. The Robur with a Doser though either doesn't produce clumps or kills them in the Doser through physical violence. I think the GOD version does have a grid in the chute though. The problem with the grid is obviously it can hold up coffee in the chute so it has to be pushed passed the grid rather than falling through the chute with no obstruction.
The quest for the perfect coffee goes on...and on...and won't ever end.Hehe also following this thread very closely!Originally posted by Magic_Matt View PostTook me a minute to figure out how that works (it's Monday morning after all)... Ingenious! Following this thread closely.That.... is...... AWESOME haha, really cool thinking outside the box!! It's really admirable to see and is also giving us all great ideas! As long as you're enjoying this process and it's not giving you too many headaches heheOriginally posted by u2jewel View PostMy latest crazy mod!
Piece of plastic, cut, holed with ice pick, threaded with silver chain.
Thinking farther out of the box. Original grid was problematic because it is rigid. Hard to access behind it. Then I tried the plastic pot cut out in the shape of vertical thin strips. With the compacted grinds behind the strips, when you blow air, the control of force was difficult. Too hard and forceful, then the gust of wind blows powder everywhere. Too gentle, then part of the shute gets cleared (one, maybe two out of 3 vertical segment), and then any following pushes are unsuccessful because there is already a gap where air would travel around, still leaving the partial blockage in tact.
Then I went the binder clip method. With one clip handle, there was less physical interference, bringing pros and cons. Pro was that there was hardly ever any blockage, and any residual could be pushed out with a gentle blow. Con was that due to lack of resistance, grinds flew out uninhibited, resulting in static clings all over the funnel (needing brush work to sweep it down the funnel) and super fluffy grinds (too fluffy, making prep work in the basket super difficult. Huuuuuge mountain about to spill out of the portafilter basket)
So, latest idea is a curtain of chain. Mahlkonig and Ceado use soft material like silicon and rubber flaps. I started looking for a substitute.
I think there is something here potentially. It did well to catch the initial spew of grinds. Some would stick to the chain, but the following grinds would also attach, and when it reaches critical mass, becomes too heavy, and then gently falls off and down the funnel in a controlled manner.
I've only done one test, too late for more coffee. If it works out, then I will video the action.

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My latest crazy mod!
Piece of plastic, cut, holed with ice pick, threaded with silver chain.
Thinking farther out of the box. Original grid was problematic because it is rigid. Hard to access behind it. Then I tried the plastic pot cut out in the shape of vertical thin strips. With the compacted grinds behind the strips, when you blow air, the control of force was difficult. Too hard and forceful, then the gust of wind blows powder everywhere. Too gentle, then part of the shute gets cleared (one, maybe two out of 3 vertical segment), and then any following pushes are unsuccessful because there is already a gap where air would travel around, still leaving the partial blockage in tact.
Then I went the binder clip method. With one clip handle, there was less physical interference, bringing pros and cons. Pro was that there was hardly ever any blockage, and any residual could be pushed out with a gentle blow. Con was that due to lack of resistance, grinds flew out uninhibited, resulting in static clings all over the funnel (needing brush work to sweep it down the funnel) and super fluffy grinds (too fluffy, making prep work in the basket super difficult. Huuuuuge mountain about to spill out of the portafilter basket)
So, latest idea is a curtain of chain. Mahlkonig and Ceado use soft material like silicon and rubber flaps. I started looking for a substitute.
I think there is something here potentially. It did well to catch the initial spew of grinds. Some would stick to the chain, but the following grinds would also attach, and when it reaches critical mass, becomes too heavy, and then gently falls off and down the funnel in a controlled manner.
I've only done one test, too late for more coffee. If it works out, then I will video the action.
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Took me a minute to figure out how that works (it's Monday morning after all)... Ingenious! Following this thread closely.
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I've never owned or operated a doser grinder before, so your journey is an interesting one for me.Originally posted by wattgn View PostThe odd journey back and forth between Doser and Doserless. The Doser helps to break up clumps, the grid helps GOD grinders to break up clumps before they hit the basket.
A Doser mixes the grind which is great, Doserless some people even go so far as to get out a whisk to break up the clumps.
I personally don't think that the clumps make a big difference to a shot. The Robur with a Doser though either doesn't produce clumps or kills them in the Doser through physical violence. I think the GOD version does have a grid in the chute though. The problem with the grid is obviously it can hold up coffee in the chute so it has to be pushed passed the grid rather than falling through the chute with no obstruction.
The quest for the perfect coffee goes on...and on...and won't ever end.
I agree with you, within reason smallish clumps can be ignored. Clumps only are problematic when it becomes difficult to eyeball whether you have evenly distributed grounds in the basket.
I read and saw pics from your other post. It feels like from different start points, we ended up at the same problem [emoji3]. You kill one problem, as a compromise, another pops up in a never ending game of whack-a-mole.
My short term goal in this game is to be able to single dose with no use of brush. No grid, while fluffy and nice, there was just too much static. Clung everywhere, brush was a must.
This avenue I'm exploring looks promising. Onto the clip, price of flexible to plastic to physically sweep out brings from chute. Blowing air can be inconsistent. Most of the time it works, sometimes, it just won't budge. Sometimes, you squeeze air too much and it makes an almighty mess!
Every time I flick on the plastic tab, it pushes out most of what's in the chute.

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The odd journey back and forth between Doser and Doserless. The Doser helps to break up clumps, the grid helps GOD grinders to break up clumps before they hit the basket.
A Doser mixes the grind which is great, Doserless some people even go so far as to get out a whisk to break up the clumps.
I personally don't think that the clumps make a big difference to a shot. The Robur with a Doser though either doesn't produce clumps or kills them in the Doser through physical violence. I think the GOD version does have a grid in the chute though. The problem with the grid is obviously it can hold up coffee in the chute so it has to be pushed passed the grid rather than falling through the chute with no obstruction.
The quest for the perfect coffee goes on...and on...and won't ever end.
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That's awesome - ping @readeral, think you suggested a hinged grid at one point.Originally posted by u2jewel View PostJust a quick try. Chopped up a fold-back binder clip and put a couple of slots on it, so the 2 bolts can hold it in place.
For every pro (that it is super easy to move up the clip to clean out the chute) there's a con.
For every anti static grid I have tried like those cut plastic pots, subtle changes in shape influences subtle changes in how and where static clings to the funnel.
The way the grinds back up behind the clip handle is very similar (but to a lesser extent) to the original metal grid. What's backed up is more fluffy, less packed. It might be the perfect mod for those with hopper use.

Might be the solution for my V-Titan.
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I do the same in my Robur. Huge hopper but I keep one cm into the hopper which is less than a days worth of coffee. It isn’t long enough time to go stale.
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Just a quick try. Chopped up a fold-back binder clip and put a couple of slots on it, so the 2 bolts can hold it in place.
For every pro (that it is super easy to move up the clip to clean out the chute) there's a con.
For every anti static grid I have tried like those cut plastic pots, subtle changes in shape influences subtle changes in how and where static clings to the funnel.
The way the grinds back up behind the clip handle is very similar (but to a lesser extent) to the original metal grid. What's backed up is more fluffy, less packed. It might be the perfect mod for those with hopper use.
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