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Restoring my new Old white Coffee Gaggia
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Discussions > Espresso > Espresso Mods > Restoring my new...  
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D4F
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Joined: 15 Mar 2012
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Location: USA
Expertise: I like coffee

Espresso: Gaggia Classic PID
Grinder: Baratza Forte-AP
Posted Wed Sep 25, 2013, 10:29am
Subject: Re: Restoring my new Old white Coffee Gaggia
 

I am not sure how a gasket of different ID and OD dimensions will fit in the space.  I wonder what product could adhere the gasket to a flat surface that you could then release or cut loose.  Silicone or cyanoacrylate?  I have a 12" disc sander, more tedious if not impossible by hand, and I would try to adhere the gasket to a flat surface.  In that flat surface I would drill and tap 4 holes spaced around the perimeter of the gasket.   A screw could be inserted to the correct height all 4 points and that would be my stop for sanding level/flat.  I am not sure how the material would adhese or sand.  I might order the thicker one of correct ID and OD, and then the second on your list.

 
D4F also at
http://www.gaggiausersgroup.com/
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iko
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Joined: 30 Aug 2013
Posts: 58
Location: Toronto
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Posted Wed Sep 25, 2013, 10:40am
Subject: Re: Restoring my new Old white Coffee Gaggia
 

Hm... they want $40 for shipping. I'm going to look for a different source.
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SJM
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Espresso: SAMA (2), Maximatic, Cremina...
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Posted Wed Sep 25, 2013, 10:46am
Subject: Re: Restoring my new Old white Coffee Gaggia
 

iko Said:

Hm... they want $40 for shipping. I'm going to look for a different source.

Posted September 25, 2013 link

Have you actually asked them if they will send it USPS?
Some of the parts suppliers are amenable to making exceptions for small orders.
If not, I agree, take your business elsewhere, but asking never hurts.
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iko
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Joined: 30 Aug 2013
Posts: 58
Location: Toronto
Expertise: Just starting

Posted Wed Sep 25, 2013, 10:48am
Subject: Re: Restoring my new Old white Coffee Gaggia
 

D4F Said:

I am not sure how a gasket of different ID and OD dimensions will fit in the space.  I wonder what product could adhere the gasket to a flat surface that you could then release or cut loose.  Silicone or cyanoacrylate?  I have a 12" disc sander, more tedious if not impossible by hand, and I would try to adhere the gasket to a flat surface.  In that flat surface I would drill and tap 4 holes spaced around the perimeter of the gasket.   A screw could be inserted to the correct height all 4 points and that would be my stop for sanding level/flat.  I am not sure how the material would adhese or sand.  I might order the thicker one of correct ID and OD, and then the second on your list.

Posted September 25, 2013 link

As long as the OD is less than roughly 72mm and larger than about 65mm, and the ID larger than 57mm and less than roughly 59mm I think it would be fine. The basket lip. the part that presses up onto the gasket, is about 62-63mm. So, any gasket of the right thickness and with ID and OD that surround the 62-63mm value would be fine.
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D4F
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Joined: 15 Mar 2012
Posts: 2,015
Location: USA
Expertise: I like coffee

Espresso: Gaggia Classic PID
Grinder: Baratza Forte-AP
Posted Wed Sep 25, 2013, 11:04am
Subject: Re: Restoring my new Old white Coffee Gaggia
 

D4F Said:

Did you note that other Gaggia gaskets are the same dimensions except thickness?  What are your ideas for thinning one?

Posted September 24, 2013 link

iko Said:

Yes, of course.  

Posted September 25, 2013 link

Sorry, The question about ID and OD was somewhat rhetorical as I saw that you had noted it and that is why I asked about thinning.

Have you tried Espressotec for supplies ???

 
D4F also at
http://www.gaggiausersgroup.com/
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iko
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Joined: 30 Aug 2013
Posts: 58
Location: Toronto
Expertise: Just starting

Posted Wed Sep 25, 2013, 5:18pm
Subject: Re: Restoring my new Old white Coffee Gaggia
 

Yes, I did, thanks. Also high price (not so high as the other one) for shipping. So far cafeparts seems the best. I may order it soon.
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iko
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Joined: 30 Aug 2013
Posts: 58
Location: Toronto
Expertise: Just starting

Posted Wed Sep 25, 2013, 7:05pm
Subject: Re: Restoring my new Old white Coffee Gaggia
 

For the record, the gasket that came with the machine measures 82x54.5x5 mm

But I got an idea. The upper part of the shower head is 54mm in diameter, and is 5mm long. That's what the gasket touches, at the very base. But the lower part of the shower head is 57mm in diameter. Well, one can use one of the very popular gaskets: 74x57x8mm:

http://cafeparts.com/productDetail1.asp?ItemID=49027

if the portafilter hooking ring is lowered 3mm. Which can be done with a 3mm thick shim. Now I'll look for some copper or brass sheet, 3mm thick. Could be aluminum too, since the portafilter hooking mechanism is made of aluminum.
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iko
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Joined: 30 Aug 2013
Posts: 58
Location: Toronto
Expertise: Just starting

Posted Thu Sep 26, 2013, 6:59am
Subject: Re: Restoring my new Old white Coffee Gaggia
 

Did some measurements, looks like the shim I want is about 114x83x3mm where 3mm is the thickness of course. This will add 3mm to the existing gasket, allowing for 8mm thick gaskets, which are plenty of. I've seen even some 8.2mm or 8.5mm gaskets, which might fit just as well. Remains to be seen, after I make the shim. Decided to go with aluminum, since it's easiest to work with and anyway the portafilter support is also aluminum.
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D4F
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Joined: 15 Mar 2012
Posts: 2,015
Location: USA
Expertise: I like coffee

Espresso: Gaggia Classic PID
Grinder: Baratza Forte-AP
Posted Thu Sep 26, 2013, 9:19am
Subject: Re: Restoring my new Old white Coffee Gaggia
 

Post a few pictures along the way.  Picture is worth a thousand words.

 
D4F also at
http://www.gaggiausersgroup.com/
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iko
Senior Member


Joined: 30 Aug 2013
Posts: 58
Location: Toronto
Expertise: Just starting

Posted Thu Sep 26, 2013, 11:00am
Subject: Re: Restoring my new Old white Coffee Gaggia
 

True that. Just didn't have anything to show yet. Here's what I'm planning at the moment. These are hard drive platters, two of them amount to something between 2.5 and 3mm thickness. I chose these because the base material is some sort of aluminum alloy. There is layer of other materials on the surface, but I will ignore that fact. :) The only worry about the shim is to conduct heat and not to rust in time.   The convenient factor about the hard drive platters as a shim is that only the inner diameter needs to be cut, I think. When I get home I'll check to see if the OD isn't too large.

iko: shim11.jpg
(Click for larger image)
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