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  1. #1
    Is a real super guy. Henry III's Avatar
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    Alignment block I made

    Well I'm finishing up my personal project for my fabrication course in my Production welding program. I was debating on doing a frame jig of some sorts but in the time frame we had left I dumbed down my project. So instead I just made a alignment block. It's two 3/4" pieces of 6061 aluminum that will get bolted together. The slot down the middle is to allow the dropout spacer or a surface gauge to slide back and forth and firmly bolted in place if needed. I still have to drill and tap some piece and counter sink the holes in the lower half of the block to allow the button head hex bolts to sit recessed. The BB post just slides right out so top block and be ground flat if needed. I made a simple block that I'll drill and tap to allow a bolt to be threaded in act as a surface gauge. It's the "P" shaped block that's quasi attached to the vertical slotted post. Overall I'm pretty happy with how it came out and should work fine as I designed everything myself up Autocad and cut out on the Water Jet.




  2. #2
    Senior Member ftwelder's Avatar
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    That looks pretty nice! You may want to add some height so you can work under the drops. Awesome acorn plate..
    1886 Surrey machinists Invincible, 1900 Nashua, 1937 Raleigh Golden Arrow, 1938 Raleigh Silver Record, 1951 Armstrong tourmalet, 1970 Motobecane Grand Record, 1971 Raleigh Professional, 1971 Gitane TDF, 1972 Legnano Gran Primio, 1973, Peugeot PX-10, 1975 Roberts, 1984 Battaglin Giro, 1985 Grandis Speciale, 2012 FTW

    frankthewelder@comcast.net

    le prix s'oublie,la qualité reste ,(michel audiard)

  3. #3
    Is a real super guy. Henry III's Avatar
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    Self built 650c frame/fork, Trek Stache 8, Guerciotti, Gary Fisher 86 Montare, Schwinn Homegrown, Schwinn Paramount 753 Reynold
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    Yeah once I threw on the seattube/bb shell onto it I noticed if I wanted to space and align the dropouts I'd need to raise it up some. So I'll cut out another spacer which will give me some more room. After looking at it I quickly noticed that I should of done the slot offset to utilize it completely. No biggie as it still works but not like it could with it offset.

    I still have to stamp the spacing measurements on the acorn as the Water Jet couldn't handle cutting out smaller font through the 3/4" aluminum. Cutting out just this stuff took a little over two hours. Now it's time for drilling and tapping. Not to mention doing all the prints, routing sheet, etc.

  4. #4
    Andrew R Stewart Andrew R Stewart's Avatar
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    Feb 2012
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    The discovery process is an interesting study. i often get part way into a project and start tweaking things, sometimes a totally different approach comes towards the completion... Andy.

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