Monday, November 10, 2008

The battle ground is set...


After a solid month of researching and trying to talk myself out of this project, I have built up a nice little work area in the garage. So from now on I will refer to the garage work area as the "Shop".
Keeping my tools to a minimum of basic hand tools and just a drill press, along with a vice, metal work table, dremel, files and some basic drafting utensiles I am trying not to spend much money. I did underestimate the key tool... the brazing torch and gas tanks.
I don't know if it is just here in California but it is EXPENSIVE to use a brazing torch set up. After combing various pawn shops, welding supply stores and the all mighty internet. I could not find a torch setup (not just the torch and hose... I need tanks, regulators, a few torch heads, flint striker and goggles)for less than an initial cost of about $450. Or renting everything would add up to about the same after only 3 days of rental fees.
That is just to much of an investment for me... so I decided to buy a Oxy/mapp torch set from Sears. I know, I know I read all the debates on the framebuilders forum and most people don't outwardly scoff at a Mapp gas setup, but I know that the Acetelyne torch setup is the prefered method for speed and accuracy.
I ordered the Paterek manual from Tim's website, I have to say I was surprised at how thurough it is at walking the reader through every step of the process. Without imparting to many confusing directions or opinions, I have been able to read a chapter and then set it down and start working without having to refer back to it every 10 minutes.
Now the fun begins!

No comments:

The lessons I am learning are amazing and really fun to work out...

The pictures below are the work I did last night, finished grinding the bottom bracket sockets.
Notched out the seat stays to fit the drop outs...
And the big big moment... doing my 1st miter on the seat tube (Tim calls this one the most forgiving miter and he is right)

I think that many of the lessons and techniques I have learned from wood working are carrying over into metal working very nicely.

bottom bracket, right side done (before finshing sanding)

bottom bracket, right side done (before finshing sanding)
the left socket is just starting to get ground, notice how thin the walls of the right socket have gotten. there is a lesson there and you will see in following pics!

grinding with a stone

grinding with a stone
it took a while with this stone but with the tight corners I had to use it because I only have one small sand paper bit left

ooh ahhh... a little sparks flyin

ooh ahhh... a little sparks flyin
That lesson I spoke of earlier is happening in this pic...

Ahhh... oh DOH!

Ahhh... oh DOH!
is that blueing? Yup that is the lesson that I learned on this socket. the grinding stone heats the metal very fast and as that wall gt thinner it started blueing. Bad, bad, bad! so I will have to sand and reshape that wall a little because I even got some chipping around the blue.

Chain stays with the drop outs notched in...

Chain stays with the drop outs notched in...
So this one was a little scary because I wasn't sure if I would get them straight and true... it ended up ok but I can do better.

Notching wasn't to hard but keeping everything even was hard

Notching wasn't to hard but keeping everything even was hard
I decided to try the bevel sides on the notch, I think I can do better so I may do the stays again?

The big moment... my first miter!

The big moment... my first miter!
I should have taken some before during and after shots but this went pretty fast actually. this is the ruff cut, I rounded it out better and got rid of that hump on the back wall

A little different angle... check out my home made tube holder... works like a charm!

A little different angle... check out my home made tube holder... works like a charm!
I am so proud of the wood block tube holder... now I just have to make the other sizes

A quick fit test...

A quick fit test...
Not bad forthe 1st miter and fit check... I only need to file the inside edges to match the bevel of the inside of the BB

Nother fit check after some finishing

Nother fit check after some finishing
still need to angle the inside of the edges then it is done and ready for finihsing before brazing. I also still need to finish the socket wall to clean up any uneven edges or tooling marks