Wanted - Drill Post

[rustexpert]

Dave,
It seems we basically agree; "mag bases are the way forward".
In ten years heavy boiler work I have never used a drilling pillar; I have watched others wasting their time wrestling with them and getting fair to poor results; but get the job done eventually. Air drills not really that good for drilling; in the same way that ratchet drills before them weren't either but I can manage the big air drills free hand if I need to (but more for bridge reaming or c/sinking than drilling) and the medium ones are useless as they (or at least the ones we have) spin too fast for even a 1/2inch drill which an decent electric pistol drill will handle anyway.
I also do the ratchet strap fixing for a mag base thing and have made a ratchet strap fixed mag base base specifically for barrels using about 15" of large channel about 8"x3" cutting ratchet strap shaped slots in the flanges of the channel towards each end so the channel device can be strapped to the barrel "legs" down and the mag base sat on the web. I have also made one with odd length legs for when working around a doubling plate so longer leg sits on the barrel and the other sits on the doubling plate but the part where the drill sits is still generally tangential to the barrel.

[baldric]

One advantage of a drill post and drill is the weight, you can add each part one at a time, a mag drill you can't always, if you can't turn the job over and can't use a hoist it becomes an issue. These guys still use them, http://www.2857.org.uk/2857_28xx_news_2007.html sorry for the manual link, can't use the button on this viewer.

[tillage]

we have used air drills and other air equipment for all boilermaking applications for more than 20 years. our air tools originated from the shipyard here on the island - j s whites. all on site holes were made with a drill post and air drill. i find it quicker to set up than a mag drill and is far more flexible in use. corner drills for awkward holes . we drill , tap , ream, tube expand etc.the necessity is having suitable drilling machines and these are expensive

[weidner]

Thanks for that piccy Sam , just the smokebox detail I need tomorrow !

[tool box]

I have several Rich, you are welcome to borrow them if you wish. I haven't used them in years!


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[steamy1]

http://www.tractiontalkforum.com/showthread.php?t=33661