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Show Your Tampers/Portafilters/Knockboxes: All things wood, all things handmade - Page 2

Postby rpavlis on Fri Jan 27, 2012 12:49 pm

I do not have any wood working equipment, but I have equipment for working with small metal parts, I have restored many research type microscopes. My brass La Pavoni Europiccola now has a bit more brass, namely a brass group handle. I made it from brass because brass is dense and it heavy enough so that the handle does not fly up as the machine cools. I also replaced the original steamer valve knob with a brass one.

Brass is not a good material for a porta filter handle because it gets too hot. I made this from Gabon Ebony. As I mentioned, I do not have wood working equipment, so I used a metal lathe to make this. Ebony is so hard that it almost behaves as metal. (I was careful to remove all saw dust, because metal lathes tend to catch swarf, and if left in place I am sure it would seriously damage a lathe.) Ebony is so hard that I cut threads directly in it to attach the portafilter. I realise that ultra hard wood like ebony can have problems with cracking from variable humidity. I immediately gave it repeated tung oil treatments until it would not soak up any more, then I let it cure a week and sanded it with very fine sand paper, and then rubbed it with steel wool. It is amazing how dark this wood really is. It has beautiful grain if one examine it close up.

I want to make a boiler cap from Gabon ebony sometime too, and also try to make another steamer valve knob, but this one from ebony instead of brass. This will certainly require a brass insert, because it will likely crack otherwise from the high temperatures.
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Postby allon on Wed Feb 01, 2012 10:21 pm

Damn, that's pretty!
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Postby Juanjo on Fri Feb 03, 2012 5:48 pm

Handles done,
levers and knobs next.! :)
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Postby wreckfish on Fri Feb 03, 2012 11:44 pm

Wow. Beautiful handles and machine. Great photo too.
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Postby TomC on Sun Feb 05, 2012 5:14 am

You gotta tell us what kind of wood! Those are beautiful^
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Postby rpavlis on Sun Feb 05, 2012 1:09 pm

Really neat!
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Postby Juanjo on Mon Feb 06, 2012 11:36 pm

thanks,

the wood is Cocobolo!

levers and one knob done.. looking good!! :)
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Postby cannonfodder on Wed Feb 08, 2012 12:04 am

Interesting design on the steam control. I have made stock like replacements for that machine but that is an novel design. Did you finish it with oil or just buff the cocobolo?
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Postby rpavlis on Wed Feb 08, 2012 7:19 pm

This is really beautiful. There are few materials that are as beautiful as cocobolo. It is also extremely hard, as it needs to be for things like this. Did you treat it with tung oil or something like that? Did you attach it directly, or did you make a brass (or other metal) insert?
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Postby jonny on Wed Feb 08, 2012 7:48 pm

Juanjo, nice work! Is this your third commercial machine in like a month!? you had the Brugnetti (beautiful wood work on that as well!) for a while, then a VFA recently, right? and now yet another 2 group commercial unit! Do you have a thing for 2 groupers in the home or is that just what seems to find it's way to you?
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