Another Linea A1 Story - Page 4

Need help with equipment usage or want to share your latest discovery?
PictureThyme
Posts: 93
Joined: Fri Mar 26, 2010 1:25 am
Real Name: Steve
Equipment: 1990 Linea 1AV, New Baratza Vario, Old Mazzer SJ
Location: Salt Lake City - Sugarhouse

Postby PictureThyme » Mon Sep 27, 2010 12:47 am

The boilers have been installed. And I've been working on final install of the fittings.

Image

Before
Image
After
Image
You do not have the required permissions to view the files attached to this post.

User avatar
erics
Posts: 4651
Joined: Tue Aug 09, 2005 2:32 am
Real Name: Eric Svendson
Location: Silver Spring, MD

Postby erics » Mon Sep 27, 2010 7:44 pm

That certainly is a beautiful job you are completing on your Linea.

I would think twice about using all that teflon tape on those fittings for several reasons. For sure the original build of the machine was not done this way, errant pieces of teflon tape have a habit of ending up in all the wrong places, and as the fittings are NOT DESIGNED to be sealed by the threads, you could actually initiate a leak by using the tape.
Skål,

Eric S.
http://users.rcn.com/erics/
E-mail: erics at erols dot com

PictureThyme
Posts: 93
Joined: Fri Mar 26, 2010 1:25 am
Real Name: Steve
Equipment: 1990 Linea 1AV, New Baratza Vario, Old Mazzer SJ
Location: Salt Lake City - Sugarhouse

Postby PictureThyme » Mon Sep 27, 2010 11:12 pm

Thank you. It's been a fun project for me and my family. When I started taking apart my Linea, I noticed teflon tape on every fitting. Then, I read comments akin to yours about not using it. Sadly, the last company to complete any maintenance on this machine did very poor quality work. As I mentioned above, all the fittings were cranked to their max.

I concur the fittings were not meant to be connected with teflon tape and in retrospect I think I may remove it. The fittings are not tightened yet because I wanted to make sure I actually remembered where everything went before I started finalizing the connections. So, look forward to new pictures without all the teflon.

Thanks for making me think before I tightened all these fittings. What do you think about the brushed (more like scratched) finish on the font facia?

Steve

User avatar
mute
Posts: 88
Joined: Mon Dec 15, 2008 10:56 pm
Real Name: Kyle Christensen
Equipment: Duetto II + Baratza Vario, Aeropress + Lido 2
Location: Lansdale, PA

Postby mute » Mon Sep 27, 2010 11:23 pm

Everything looks great! If you're worried about the front plate looking bad, you could always get it powdercoated. It obviously wouldn't be metallic, but it would stand up to the occasional portafilter collision.

User avatar
erics
Posts: 4651
Joined: Tue Aug 09, 2005 2:32 am
Real Name: Eric Svendson
Location: Silver Spring, MD

Postby erics » Mon Sep 27, 2010 11:35 pm

What do you think about the brushed (more like scratched) finish on the font facia?

Certainly there is probably some posts here on HB as regards metal finishing - not my most skilled endeavor. However, one thought would be to grab a junk piece of SS to see if any methods you want to try are reasonable. I realize(?) you already sent it out for rework that was returned not to your satisfaction.
Skål,

Eric S.
http://users.rcn.com/erics/
E-mail: erics at erols dot com

User avatar
mute
Posts: 88
Joined: Mon Dec 15, 2008 10:56 pm
Real Name: Kyle Christensen
Equipment: Duetto II + Baratza Vario, Aeropress + Lido 2
Location: Lansdale, PA

Postby mute » Mon Sep 27, 2010 11:37 pm

You could also bead blast it. That would give it a matte finish that probably wouldn't scratch as easily a stainless finish would.

gscace
Team HB
Posts: 627
Joined: Fri Aug 12, 2005 11:07 am
Real Name: Gregory Scace
Location: Laytonsville MD

Postby gscace » Tue Sep 28, 2010 10:31 am

PictureThyme wrote:
What do you think about the brushed (more like scratched) finish on the font facia?

Steve


You can do some very nice metal finishing yourself on this part. Here's how to "grain" metal:

go to the Home Despot (where you can be tin-horn dictator of your own hovel), and buy a pack of 240 grit wet or dry sandpaper. Get full size sheets as they are more economical. Buy 3-M's hard rubber sanding block designed to accept 1/4 sheets. Split a full sheet into fourths and install one into the sanding block. Fasten down the front panel so that it can't move. I think I may have laid mine onto a piece of plywood and used two-sided tape to keep it in position. Screw a guide of some sort onto the plywood (I think I used a pine strip), parallel to the long axis of the plate. Wet the sandpaper (lots of water is good) and sand the front face, moving along the face and keeping all sanding strokes parallel, using the guide. The trick is to always sand in the same fore and aft direction. If you deviate from the one line of action you will introduce some pretty lousy looking scratches. Pretty soon you will have a beautiful grained finish that is easily cleaned and does not show fingerprints. It shows off very nicely against polished stainless. Change out the sandpaper as soon as it stops cutting the metal quickly. Sandpaper is pretty cheap and you can waste a lot of time trying to extend the life of the paper.

When I spiffed up my Linea, I grained the cover panel you are concerned with. I also grained the 3-sided panel that attaches near the top of the machine.


-Greg

User avatar
JohnB.
Posts: 2955
Joined: Thu Feb 14, 2008 11:36 am
Real Name: John Borella
Equipment: Speedster/Strega/1975 Cremina /LaPeppina/K10WBC/the original Bunnzilla/Hottop B
Location: northeastern Ct.

Postby JohnB. » Tue Sep 28, 2010 12:15 pm

If by "circular burnishing " you are looking for an Engine Turned finish on the front panel this guy could probably do a nice job for you: http://www.cs.ucr.edu/~eamonn/et/et.htm
LMWDP 267

User avatar
mute
Posts: 88
Joined: Mon Dec 15, 2008 10:56 pm
Real Name: Kyle Christensen
Equipment: Duetto II + Baratza Vario, Aeropress + Lido 2
Location: Lansdale, PA

Postby mute » Tue Sep 28, 2010 12:22 pm

JohnB. wrote:If by "circular burnishing " you are looking for an Engine Turned finish on the front panel this guy could probably do a nice job for you: http://www.cs.ucr.edu/~eamonn/et/et.htm


That would be really cool looking I think.

mitch236
Posts: 1195
Joined: Wed Jul 21, 2010 8:26 am
Real Name: Mitch
Equipment: Strada EP, Robur-E
Location: Florida

Postby mitch236 » Tue Sep 28, 2010 1:08 pm

erics wrote:That certainly is a beautiful job you are completing on your Linea.

I would think twice about using all that teflon tape on those fittings for several reasons. For sure the original build of the machine was not done this way, errant pieces of teflon tape have a habit of ending up in all the wrong places, and as the fittings are NOT DESIGNED to be sealed by the threads, you could actually initiate a leak by using the tape.


Really? I've been doing some mods to my Linea and I've used teflon tape on all the fittings. Should I go back and remove the tape? I've owned my machine since new but used to have it serviced so some of the fittings may have been tampered with but I thought I was supposed to use tape. The machine has been working fine with no leaks but I don't mind re-doing the fittings I used tape on.

Thanks!