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Thread: Portafiller naked conversions

  1. #1
    Senior Member level3ninja's Avatar
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    Portafiller naked conversions

    Hi all,

    I have just converted my Breville BES800 portafiller to naked with a hole-saw and files. Takes about 15 minutes.

    I'm willing to do anyone else's, assuming you bring it to me or pay all postage. I'm located near Liverpool in SW Sydney.
    Let me know what the internal diameter of your portafiller is (or model), and I'll see if I have a hole-saw that's close enough to file.

    Here's a few pictures:


    Hat removed...


    Take that portafiller! Now for some filing...


    Hmm, maybe a bit more filing...


    Tada!
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    Coffee Nut fg1972's Avatar
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    Very nice.

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    Nice work and a very generous offer L3N!

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    Member Arcade's Avatar
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    Nice work, and good on ya for the kind offer. I'm going to try this one myself with a spare pf.

  5. #5
    Senior Member artman's Avatar
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    Good job. I did my first naked lelit PF with a hike saw and a drill press. Used some lube and took a while but with a bit of sanding to remove the sharp edges turned out great. It blunted the saw though, probably as my hole saw set was the cheap multi size thin variety.

    Cheers

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    Thanks for the heads up,will source a second portafiller and try the same,thanks once again.

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    Nice job! What size Is the 800 portafilter?

  8. #8
    Senior Member level3ninja's Avatar
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    The BES800 uses a 51mm portafilter. I have since upgraded to a BES920 which uses a 58mm portafilter and is really nice

    I have done another conversion for a CSer early last year. I can't remember the brand of his machine but it was a 2 head lever machine that used I think a 48mm portafilter. The nearest holesaw I had was quite a bit smaller than that and I think it took be about an hour to file down.

    A few days ago I did another naked conversion for another CSer of his Sunbeam 6910 58mm portafilter. Used a flapwheel in the drill instead of a file, which made it easier, quicker and had a nicer finish.

    Immediately after drilling hole
    20150114_182720 - (1024x576).jpg

    Finished
    20150115_184551 - (1024x576).jpg20150115_184554 - (1024x576).jpg

  9. #9
    mds
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    Are there any Canberrans who have done naked portafilter conversions?

    Mel

  10. #10
    Senior Member level3ninja's Avatar
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    The last one I just added photos of are for a guy from Melbourne who posted it to me.

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    I'm looking for a 54mm naked unit for my Breville 870. Some early Breville portafilters are a lot cheaper than the 870
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    Hi Mel,

    I haven't done one but seems to be pretty straight forward and I should have the necessary tools so if you want to have a go let me know.

    What size is your portafilter so i can check if I have a suitable holesaw.

    BTW, I'm in Latham.



    Gary

  13. #13
    mds
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    Problem Solved

    Gary (Gazza)

    I'm now a proud owner of a naked portafilter, thanks to you for the great and professional job you did.

    Mel
    Attached Images Attached Images

  14. #14
    Senior Member level3ninja's Avatar
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    Nice job gazza!

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    This was done with the portafilter turning in a lathe and the holesaw fixed in the tailstock. I was very surprised at how well the cut went !!

    Gary

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    Quote Originally Posted by lappa View Post
    I'm looking for a 54mm naked unit for my Breville 870. Some early Breville portafilters are a lot cheaper than the 870
    Did you have any luck?? I wouldn't mind getting a naked 54mm for my Breville 840......

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    I did another conversion last Friday, used the same method on the lathe with a 57mm hole saw.

    naked#2-1.jpgnaked#2-2.jpgnaked#2-3.jpg


    Gary

  18. #18
    mds
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    The first one is always the best. Wink,Wink.

    Do you want to come over for a coffee, I've got some nice single origin.

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    Gazza,

    have you done any 54mm portafilters?

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    Nope, but as long as the handle can be removed it shouldn't be a problem.


    Gary

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    Quote Originally Posted by gazza View Post
    Nope, but as long as the handle can be removed it shouldn't be a problem
    Gary
    Hmm, I don't think the Breville portafilters have removeable handles

    I will try when I get home, but if the 800ES portafilter here at work is anything to go by then it's not (or I'm just not being forceful enough)

  22. #22
    Senior Member level3ninja's Avatar
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    Breville handles are all moulded in as far as I'm aware.

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    I'll have to check the clearance over the bed of the lathe.

    What is the measurement from the center of the basket to the end of the handle ??


    Gary

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    Senior Member nikko.the.scorpio's Avatar
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    Nice thread and my admiration on the quality of all these jobs!

    Inspired by this thread I converted my Silvia's stock PF yesterday. Alas as I'm a frugal sucker I choked at the prospect of plumping down ~$30 for the 57mm holesaw plus another $30 for the correct arbor to hold it. Made do with a $30 Craftright holesaw kit which had all in it BUT the closest size was 51mm. Anyway chatted with the staff member who when I asked him about cutting fluid said any oil is ok - so used some old cooking oil.

    The real PITA for me was that I don't have a proper vice etc to hold it - had to make do with the very sketchy holding abilities of a old B&D workstation with the screw in sides. The cutting was a tad tricky as the brass being soft it was hard to keep the 51mm HS centred but drilled from inside out and went quite well. Running late on time so I worked it in my hand for about 45mins with a dremel and half round file to smooth & further reduce sides (As have around 4mm extra on base than where the ideal side meets base corner is).

    Need to get a proper vice and also perhaps a rasp fitting for my drill etc - THOUGH to be fair the 4mm at bottom doesn't impact an extraction at all (is still well inside where the bottom of the basket looms over) so purely aesthetics.

    Uber envious of those with lathes etc.....makes me so wish I wash back in metal/woodwork class at school. Already seeing the benefit of a naked PF as picked up info from the first extractions this morning on a few things less than ideal. :-)

  25. #25
    Rbn
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    I did my 51 mm P/F with a battery drill and holesaw.
    I held it in my hand while I did it!
    It was no issue at all.
    The hole saw was a perfect fit, centred by a drill, virtually no chattering.

    A small amount of cleaning up with rough emery tape and it is perfect.
    Photo to come.

    Robin
    The basket is a Krups, the ridge is a little lower in the basket than the Breville/Sunbeam one, meaning the P/F has to go further to the right.
    I will fix it when I get a Krups double basket for my EM4800c/EM5600.
    Attached Images Attached Images
    Last edited by rawill; 21st August 2015 at 01:12 PM.
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    I did this yesterday for my gaggia classic. I think it was a 54mm hole saw, cost me $25 or so. I already had the arbor.

    In lieu of a vice I used an F clamp on a saw horse, held it tightly enough. I put a spacer under the handle so that the top of the porter filter was flush against the saw horse. I removed the handle and clamped against the square part of the portafilter.

    About 10 minutes of slow drilling with my cordless drill did it neatly for me. I squirted inox at regular intervals. I used rough sandpaper to smooth the edges.

    Simple.

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    As rocket machine came with two portafilters I decided to make one naked as I had all the tools here already. I put "metal mend" in the spout to keep the drill centred and stop movement - however most likely planned it out much more than needed seeing as someone said they did it hand held!

    Drilled - slow and hard with cutting fluid. Took about 20 seconds.


    After a quick sand - didn't bother cleaning too much, just got rid of sharp edges.


    Also willing to help others free of cost. Brisbane, Hamilton area.
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    Great work Timbo, looks very professional!

    I might take you up on your very generous offer. I work pretty close to Hamilton and ill hopefully be purchasing a new machine in the near future.

    Maybe we could work out some sort of trade when the time comes

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    Has anyone converted at BES920 PF?

    I've looked at it many times and it's my impression the handle actually attaches to both the side and bottom so if you cut out the bottom, you will loose a lot of strength.

    I've converted a 6910 PF and that one attaches to the side so cutting the bottom out makes no difference to the strength of the PF. The BES920 is a different design

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    What does it look like? I've fot a Breville one here, but think it might be off an 860.

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    Looks like this. Handle joins at the bottom more than the sides.

    pf.jpg

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    Breville makes one for the BES920, you can see from the image it looks like they just mod a regular. Other thing to be aware of, it's solid stainless = a lot more work! I'd go so far as to say not a home job unless you have a lathe. As I'd hate to try and file and sand it clean.



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    Quote Originally Posted by Marxy24 View Post
    Great work Timbo, looks very professional!

    I might take you up on your very generous offer. I work pretty close to Hamilton and ill hopefully be purchasing a new machine in the near future.

    Maybe we could work out some sort of trade when the time comes
    Yep the trade is I'll drill it and you can file and sand! Depending what material the handle is made of it, is a very quick job to drill. The time is in the cleaning up.

  34. #34
    Senior Member iggs's Avatar
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    just got my pf back from the level3ninja workshop and it looks a treat! can't wait to give it a whirl :-)
    Attached Images Attached Images

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    Senior Member level3ninja's Avatar
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    Haha "workshop"
    AKA hold PF in left hand, drill in the right
    Since then, however a neighbour was throwing out a workbench, so I now have a workbench and my late grandfather-in-law's vice mounted on it, so am keen to try another!

    Also if anyone wants my old Breville 800 naked shown at the top of this thread it's up for grabs.

  36. #36
    Senior Member iggs's Avatar
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    Quote Originally Posted by level3ninja View Post
    Haha "workshop"
    AKA hold PF in left hand, drill in the right
    Since then, however a neighbour was throwing out a workbench, so I now have a workbench and my late grandfather-in-law's vice mounted on it, so am keen to try another!

    Also if anyone wants my old Breville 800 naked shown at the top of this thread it's up for grabs.
    haha. shh don't spoil the illusion! Thanks again mate, appreciate it. It turned out really well!

  37. #37
    Senior Member magnafunk's Avatar
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    level3ninja just modded my portafilter, couldn't wait for the morning to try it out so here's a quick pic of my first ever naked pour! Really stoked with the portafilter, thanks so much!
    DSC_0338.jpg
    DSC_0339.jpg
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    Member Aido's Avatar
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    Dremel or other brand rotary tools do a good job of finishing the burr remains from the hole saw. They have a polishing bit too. Worked a treat on my spare 6910 PF

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    Quote Originally Posted by MrFreddofrog View Post
    Has anyone converted at BES920 PF?

    I've looked at it many times and it's my impression the handle actually attaches to both the side and bottom so if you cut out the bottom, you will loose a lot of strength.

    I've converted a 6910 PF and that one attaches to the side so cutting the bottom out makes no difference to the strength of the PF. The BES920 is a different design
    Hey mate, I converted mine yesterday.. It was a lot of work. I used a drill press and a lot of cutting fluid. Slightly too big hole saw too. It's doable, but I probably should have just bought one.
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    Quote Originally Posted by tmb99 View Post
    As rocket machine came with two portafilters I decided to make one naked as I had all the tools here already. I put "metal mend" in the spout to keep the drill centred and stop movement - however most likely planned it out much more than needed seeing as someone said they did it hand held!

    Drilled - slow and hard with cutting fluid. Took about 20 seconds.


    After a quick sand - didn't bother cleaning too much, just got rid of sharp edges.


    Also willing to help others free of cost. Brisbane, Hamilton area.
    Hi Timbo, awesome work there. I now am a proud owner of a bes920 from breville. Have 2 handles and was wondering if you could be so kind to convert one for me. I'm only on Nundah so could drop it off and pick it up. Thanks, Teej.

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    Any chance anyones still doing this? I've got a Breville BES920 portafilter

  42. #42
    Senior Member level3ninja's Avatar
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    I am. Haven't done a 920 yet but keen to give it a go. I seem to remember reading somewhere that the portafilter is stainless steel? If it is it'll take a while longer to do so you'll be without it for more like 2-3 weeks than 1-2 (if posting).
    Last edited by level3ninja; 19th April 2017 at 07:28 AM. Reason: Autocorrect
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  43. #43
    Senior Member level3ninja's Avatar
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    I agree Paul. I even have a lathe. It was my grandfather's. Problem is it's currently sitting under a bunch of stuff in my dad's garage waiting for me to get around to building a house so I can move it once and once only. Not sure it would have the clearance to swing an entire portafilter handle around with the stock though.

  44. #44
    Site Sponsor Casa Espresso's Avatar
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    Yes its a big lathe to have that swing clearance.

    What you need is a mill.

  45. #45
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    Quote Originally Posted by Casa Espresso View Post
    Yes its a big lathe to have that swing clearance.
    Do Breville PFs not have handles that unscrew?

    7" swing is a "small" lathe (I'd be surprised to find anything smaller than that in somebody's grandfather's garage, unless it's a "baby" lathe like a Sherline or something but you can't really fit stuff on top of one of those ), and I just measured one of my PFs (bog standard 58mm) at 4" (sans handle) so that'd be plenty of lathe for one of those.

    But yeah, if the handles don't come off you're going to need a more substantial lathe (or a mill)...

  46. #46
    Senior Member level3ninja's Avatar
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    Quote Originally Posted by jbrewster View Post
    Do Breville PFs not have handles that unscrew?
    Nope. Cheaper to manufacture that way I suspect. I don't actually know the clearance on "my" lathe. I've only seen the sheet over it lifted once as my father tends to hoard and access is limited. I do remember thinking it was smaller than I expected for a metal lathe.

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    Hey mate i've sent you a PM!

  48. #48
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    So I've recently secured a spare PF for my EM7000 and am looking for a kind soul to help me with the naked conversion.

    I'm in Sydney—any takers?
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  49. #49
    Senior Member level3ninja's Avatar
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    I'm in Casula. Where abouts are you? I haven't done a 7000 but have done a couple of 6910s.

  50. #50
    Senior Member trentski's Avatar
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    My single has a blind basket in it. My double is used when im pouring two single shots and my bottomless is used for doubles.
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