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Post by Deleted on Oct 6, 2008 9:52:07 GMT
I'm not going to file my steam valve handle bores! Anyone know where to get square broaches? I see Chronos have some but I can't see what they are like from the photo. They look like Swiss files to me!
Thanks
JB
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Post by circlip on Oct 6, 2008 17:33:39 GMT
Piece of square Silver Steel or Gauge Plate, turn end to form spigot same diameter as square end with a coned recess thus forming teeth. Place "Punch" in pre drilled hole in handle and squeeze through. If you're doing a lot, you could always harden the stake. Use them for broaching square holes in Dobbins hooves, much kinder than smashing square nails through.
Regards Ian.
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Post by Nigel Bennett on Oct 8, 2008 12:00:02 GMT
You can buy an awful lot of swiss files for the price of a broach. We use them at work (6mm and above, for lock parts) and they're hundreds of quid each. Broaching machines aren't that common, either.
I usually file my handwheels out something like and then bash a sharp "size" square through.
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Post by Deleted on Oct 8, 2008 14:08:45 GMT
Thanks for the advice, I'll revert to hand work!
JB
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Post by mutley on Oct 12, 2008 13:13:56 GMT
Ive just used a needle file held in the drill chuck to do mine. Drill the hole fractionaly lager than the size of the file, clamp everything down tight and then glently work the file through the hole. Obviously leave the drill switched off!!
Andy
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Post by circlip on Oct 12, 2008 15:11:40 GMT
Aw shucks Andy,you spoiled it, when I nod my head, you hit it. ;D
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Post by Deleted on Oct 12, 2008 17:32:49 GMT
Works a treat Andy! I just tried it using a brass 4BA Nut balanced on top of a piece of tube held vertically. Nothing was clamped down but it pushed it thru no problem!
Many thanks
JB
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Post by mutley on Oct 12, 2008 17:33:10 GMT
Ciclip -nah, to delicate to use a hammer this time.
Simlpyloco-You might need to be a little more careful with steel.
Andy
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