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Impressed with 3d printed mods to the Eureka Mignon


gingemonster

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25 minutes ago, Kjk said:

If it fits well with no slipping it lets you make more accurate small adjustments to the grind. That is one of my few gripes with the specialita, it is difficult to fine tune grind size due to the small sizing of the adjustment wheel, perceptible movements cause large changes in grind so you’ve got to just nudge the wheel (to the point you’re wondering if you have turned it at all). The Mignon XL comes with a bigger wheel fitted so it’s clearly a step up from a design perspective.

Hey @Kjk thanks for the reply, that’s very helpful. I’ve seen a few designs floating around by now. Any recs on which one is best and where to source one?

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1 hour ago, Zatogato said:

Hey @Kjk thanks for the reply, that’s very helpful. I’ve seen a few designs floating around by now. Any recs on which one is best and where to source one?

I think they’re all much of a muchness. Essentially you’re after a graduated disc attached to a cap. I don’t put too much on calibrating the dial zero to true zero point either as I’ve never had to move it more than 1.5 numbers on the current scale. If you’re using it as designed (on demand) you’d never want big adjustments anyway until you switch bean or brew method.

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PMA all day!

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32 minutes ago, Kjk said:

I think they’re all much of a muchness. Essentially you’re after a graduated disc attached to a cap. I don’t put too much on calibrating the dial zero to true zero point either as I’ve never had to move it more than 1.5 numbers on the current scale. If you’re using it as designed (on demand) you’d never want big adjustments anyway until you switch bean or brew method.

Understood, I will source one. Yes my Eureka is only for espresso so the purpose is just to give finer control for that. Thanks again!

Edited by Zatogato
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  • 2 weeks later...
On 31/03/2021 at 22:05, RossD said:

Very happy with my single dose mod from Etsy. Seems good quality so will hopefully last!

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The chap who sells this mod has the stl files up open source. Don't suppose there's anyone willing to print these for me is there? Note that he recommends different materials for the hopper and bellows; https://www.thingiverse.com/thing:4703218

If anyone is willing to print, I wouldn't mind tinkering with the hopper design. It seems unnecessarily tall in my eyes (I only dose 18g at a time) and I don't have much headroom where the grinder is going. I also read a few (minor) complaints that the insert into the grinder is a few mm too long, so the hopper doesn't sit flush to the grinder - Can you confirm Ross?

I also thought this little attachment to change the angle of the chute might be good; https://www.thingiverse.com/thing:4589706 might not look that good on the chrome mignons but would probably blend nicely if that section was black like mine.

Edited by newdent
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8 hours ago, newdent said:

The chap who sells this mod has the stl files up open source. Don't suppose there's anyone willing to print these for me is there? Note that he recommends different materials for the hopper and bellows; https://www.thingiverse.com/thing:4703218

If anyone is willing to print, I wouldn't mind tinkering with the hopper design. It seems unnecessarily tall in my eyes (I only dose 18g at a time) and I don't have much headroom where the grinder is going. I also read a few (minor) complaints that the insert into the grinder is a few mm too long, so the hopper doesn't sit flush to the grinder - Can you confirm Ross?

I also thought this little attachment to change the angle of the chute might be good; https://www.thingiverse.com/thing:4589706 might not look that good on the chrome mignons but would probably blend nicely if that section was black like mine.

It looks flush from that photo and the original design that is also available on Etsy, why do you have reason to believe it won't be?

I have one on the way from someone on eBay, I paid £25 delivered: https://www.ebay.co.uk/usr/pure_3d_prints

I got the link to that 3D printer from this thread and this particular post: 

You may well be able to get it a bit cheaper but with someone who has ordered from that particular printer and is totally happy with the result why bother risking it?

Edited by pandabear
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7 minutes ago, pandabear said:

It looks flush from that photo and the original design that is also available on Etsy, why do you have reason to believe it won't be?

There were a few reviews on Etsy saying so but to be fair, the design had likely been tweaked to deal with issues. 

The designer doesn't have any hoppers in stock at the moment but if his costs aren't too high, I'd definitely consider buying from him. After all, he's sold over 600 of them and must have ironed out niggles with printing. From the comments, there seemed to be lots of people struggling to print the bellows and that's the part I would be worried about breaking over time, so would be interested to see how yours holds up. 

Only advantage of using a local printer is that there are some other bits I'd like printed like the chute mod and a tray.

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11 hours ago, newdent said:

The chap who sells this mod has the stl files up open source. Don't suppose there's anyone willing to print these for me is there? Note that he recommends different materials for the hopper and bellows; https://www.thingiverse.com/thing:4703218

If anyone is willing to print, I wouldn't mind tinkering with the hopper design. It seems unnecessarily tall in my eyes (I only dose 18g at a time) and I don't have much headroom where the grinder is going. I also read a few (minor) complaints that the insert into the grinder is a few mm too long, so the hopper doesn't sit flush to the grinder - Can you confirm Ross?

I also thought this little attachment to change the angle of the chute might be good; https://www.thingiverse.com/thing:4589706 might not look that good on the chrome mignons but would probably blend nicely if that section was black like mine.

Update on mines - bellows didn't hold up very long and now have hairline tears at the seems so doesn't pump air or return to normal very well... The guy on etsy gave me a code for a free new set of bellows but wouldn't cover shipping! So will be looking to get one printed here probably

For the hopper I quite like it and mines sits flush and is very sturdy

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Oh wow, that's expensive. I may look into other options in that case, especially regarding the bellows as it may be more beneficial to get some actual bellows that are made of a more suitable material. These were appealing because they look good but it doesn't really matter if they're ugly if they're usually sat in a drawer! 

Appreciate the feedback guys, I'll send off for some print quotes.

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  • 1 month later...
On 21/04/2021 at 16:36, RossD said:

I got replacement bellows from https://www.ebay.co.uk/usr/pure_3d_prints and its much better quality than my etsy original so would definitely recommend! 

Hi, just bought a Crono grinder and thinking about getting some 'usability' add-ons. How much were the bellows from pure_3d_prints can I ask?

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On 13/04/2021 at 22:51, newdent said:

Oh wow, that's expensive. I may look into other options in that case, especially regarding the bellows as it may be more beneficial to get some actual bellows that are made of a more suitable material. These were appealing because they look good but it doesn't really matter if they're ugly if they're usually sat in a drawer! 

Appreciate the feedback guys, I'll send off for some print quotes.

Hi newdent, did you get any printing done? Am thinking about getting the hopper & bellows set:

https://www.thingiverse.com/thing:4703218

Did you get a chute attachment, do they make things less messy?

https://www.thingiverse.com/thing:4589706

Thanks. :)

 

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2 minutes ago, smallblueplanet said:

Hi newdent, did you get any printing done? Am thinking about getting the hopper & bellows set:

https://www.thingiverse.com/thing:4703218

Did you get a chute attachment, do they make things less messy?

https://www.thingiverse.com/thing:4589706

Thanks. :)

 

Hey, I ended up having to return my crono as it developed a fault and am now using a new grinder, so didn't get any prints done except a tray, which helped with mess and would recommend; https://www.ebay.co.uk/itm/234047432195 I recommend this seller, he worked with me to develop this tray from a smaller design. Good comms, tracked shipping.

I didn't need the chute attachment in the end, I just ground straight into the portafilter and it worked just fine. I think there were longevity issues with the 3d printed bellows and the original designer is now using silcone ones; https://www.etsy.com/uk/listing/923944178/eureka-mignon-single-dose-hopper-and

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1 minute ago, newdent said:

Hey, I ended up having to return my crono as it developed a fault and am now using a new grinder, so didn't get any prints done except a tray, which helped with mess and would recommend; https://www.ebay.co.uk/itm/234047432195 I recommend this seller, he worked with me to develop this tray from a smaller design. Good comms, tracked shipping.

I didn't need the chute attachment in the end, I just ground straight into the portafilter and it worked just fine. I think there were longevity issues with the 3d printed bellows and the original designer is now using silcone ones; https://www.etsy.com/uk/listing/923944178/eureka-mignon-single-dose-hopper-and

Cheers mate, I remember reading your posts now about your faulty Crono. 

I saw that tray, it looks good. I messaged that guy with the link for the hopper & bellows to ask how much. :)

Will hopefully try my grinder soon - as soon as Parcel Farce deign to deliver! #lostinspace

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4 minutes ago, smallblueplanet said:

This looks fun as a lid for the hopper rather than the bellows, got a coffee cup on the top side.

https://www.thingiverse.com/thing:4871894

card_preview_EurekaMignonSingleDoseCap.p

you could likely use that on top of an open ended bellow similar to the solo (DF64, etc) grinder to seal it as you press the bellows. I couldn't tell from the etsy page if that's what he has done or if it's a one-piece silicone bellow.

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On 11/06/2021 at 11:59, smallblueplanet said:

Hi, just bought a Crono grinder and thinking about getting some 'usability' add-ons. How much were the bellows from pure_3d_prints can I ask?

I got a price of £12 including postage so not too bad in my opinion! @smallblueplanet

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