Sunday, September 23, 2007

Gear cutting has started

Today (betwen the many rainstorms) I was able to finish centering up the gear.  I am hoping that everything will be okay.  It looks pretty good but I will not know for sure until it has to rotate against another gear.

After getting everything centered and cleaning up the outer diameter, I decided to start cutting the gear.  I did not have the camera with me due to all of the rain but I will take some pictures during the next session.  This particular gear is going to have 100 teeth.  The start of the process was to use a divider to create 10 equal arcs on the gear.  From there, those were divided in half.  Each of those arcs should contain 5 teeth.  I am able to use the divider to evenly divide this into 5 pieces.

So, after placing a small mark, I use a small wooden pattern to mark the cutout for the teeth.  After scribing a small line, I then took the hacksaw and cut the sides of the tooth.  The waste material is still in place.  If the rain stops and I can get the forge going, I will then heat the gear up a bit and use a chisel to knock the waste material out of the way.

In all honesty, if not for the rain, I probably could have gotten a lot done on the gear today.  Oh well...

On a final note, I did make a minor mistake.  The clock that I am reproducing only had 96 teeth on the main wheel, not 100.  The 96 is probably because it was easily evenly divided to very small numbers which makes it easy to mark for cutting.  I just made a little goof as I was thinking of my original wooden clock.  It really is not that big of a deal.  Extra teeth on this wheel will not hurt me.

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