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  • Creating a bottomless portafilter

    Created a naked portafilter - WOW! the pour is extraordinary, will put up a video as soon as i have a spare moment.

  • #2
    Re: Creating a bottomless portafilter

    Originally posted by 282E233A222E364F0 link=1301662443/23#23 date=1304379947
    Created a naked portafilter - WOW! the pour is extraordinary, will put up a video as soon as i have a spare moment.
    I have been meaning to convert one of my spares too. Did you just use a hole saw then polish it or get someone to take it out on a mill?

    Cool toy too but I prefer the open springs on my groups 8-)

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    • #3
      Re: Creating a bottomless portafilter

      Hey BF, I recently did the naked Conversion. See my post in my azkoyen bravo thread (extreme machines) for details

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      • #4
        Re: Creating a bottomless portafilter

        Originally posted by 7077737C747E6B7B7C75120 link=1301662443/24#24 date=1304820997
        Did you just use a hole saw then polish it or get someone to take it out on a mill?
        I actually did it carefully with an angle grinder! You cant see any difference except when the portafilter is off and you turn it upside down, otherwise you would be none the wiser as to whether it was a home mod or a manufactured part.

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        • #5
          Re: Creating a bottomless portafilter

          thanks guys, I have a tame mill and lathe owner around the corner and I have a pedestal drill with a good vice and a dremel mini grinder to tidy it up. I think I will bash my own based on the pics.

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          • #6
            Re: Creating a bottomless portafilter

            Originally posted by 6166626D656F7A6A6D64030 link=1301662443/27#27 date=1304842139
            thanks guys, I have a tame mill and lathe owner around the corner and I have a pedestal drill with a good vice and a dremel mini grinder to tidy it up. I think I will bash my own based on the pics. 
            That sounds fine BF, with that gear you will be able to do it easily and as I say no one will ever be the wiser just from looking at it in place.

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            • #7
              Re: Creating a bottomless portafilter

              Id been meaning to knock up a bottomless for my La Cimbali M28 for some time now and after getting a bunch of new portafilters a bit ago I was ready to sacrifice one of my older ones and this thread finally pushed me over the line. So I loaded up the 2" hole saw into the drill press and locked one of the older portafilters into its vice and drilled away after setting the press for the slowest speed its capable of. With only a light amount of pressure the general purpose hole saw cut right through the 6mm thick brass so easily I didnt even bother to use any cutting fluid/lubricant. My Dremel quickly cleaned up the edges and after a thorough cleaning the now bottomless portafilter was ready to go.

              All-in-all a very easy mod. Unfortunately though the first pull with it will have to wait until after I get some shuteye as Ive been up all night and its now 6:15 in the morning here and time to go to bed! :

              Seeing as weve gone so far OT from the OP I split this off and put it here in its own thread.


              Java "Now Naked! " phile
              Toys! I must have new toys!!!

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              • #8
                Re: Creating a bottomless portafilter

                Originally posted by 6C6A677E666A720B0 link=1304379949/0#0 date=1304379947
                Created a naked portafilter - WOW! the pour is extraordinary, will put up a video as soon as i have a spare moment.
                Gday galumay. I am using my Pompeii pretty much exclusively with a naked as well. Its the only machine where I do this because the pours are so beautiful to watch and the results are in the cup.

                Your 2 hole steam tip and DVD are in an express post bag heading north. Hopefully you should have them in a few weeks!  ;D

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                • #9
                  Re: Creating a bottomless portafilter

                  Anyone know anyone who could machine mine for me - Silvia PF - and Im just near St Kilda Road, Melb.

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                  • #10
                    Re: Creating a bottomless portafilter

                    Well the new bottomless worked a treat. The mouthfeel and flavor of the coffee has definitely changed. And its fun to watch the pour too!

                    I tried to take a video of a pour but all I have available at the moment is an older VGA res phone and it did not turn out too good so yall will have to wait until a friend with a better phone comes over and Ill take a vid then.


                    Java "Scaring the neighbors!" phile
                    Toys! I must have new toys!!!

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                    • #11
                      Re: Creating a bottomless portafilter

                      Finally got naked, slowest speed on the drill with a touch of oil to help cutting. Tidy up with the Dremel and a little wet and dry. I need to go and buy a different sized saw to do my spare on the Izzo (55mm) now.

                      really bad phone camera shots in bad light too.



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                      • #12
                        Re: Creating a bottomless portafilter

                        Nice - my cousin has had my PF for a year now! How hard is it to machine one - geez! :

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                        • #13
                          Re: Creating a bottomless portafilter

                          Originally posted by 7366746F6E62070 link=1304379949/11#11 date=1305528435
                          my cousin has had my PF for a year now! How hard is it to machine one - geez!
                          Getting around to it can take a while, but the process itself only takes minutes.


                          Java "Ill try to snap a pour from it tomorrow." phile



                          Toys! I must have new toys!!!

                          Comment


                          • #14
                            Re: Creating a bottomless portafilter

                            Originally posted by 2E3B2932333F5A0 link=1304379949/11#11 date=1305528435
                            Nice - my cousin has had my PF for a year now! How hard is it to machine one - geez!
                            I have been going to make one for over a year for the Izzo and as it sleeps in the shed where the drill is which is in the same place I work 6 or 7 days a week. All good things take time is the only excuse

                            I really now need to add a silicon mat to my bench to use the naked but apart from that an easy job 30-40 minutes and the pours look and taste great. Really love the tiger stripes 8-)

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                            • #15
                              Re: Creating a bottomless portafilter

                              looks like you have had some errant spurts of coffee on the side of the cup there beanflying. Thats one of the reasons I put my bottomless away, the spouts are so much cleaner

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