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  #11  
Old 03-25-2011, 10:36 AM
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Find another old opener; the middle section of the t-bar will bolt right in and you can splice the chain.

You will also have to tinker with the limit switch nuts & switches of course.
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  #12  
Old 03-25-2011, 10:43 AM
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Quote:
Originally Posted by Norm W View Post
I sure it would have been cheaper to buy a new gear, but the challenge was there.
What kind of a fun thread would that be?
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  #13  
Old 03-25-2011, 05:54 PM
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Norm, that there was a stroke of genius. You wouldn't believe the crap I come up with just not to have to spend a dollar....

Just today I put together a funnel holder out of stainless steel carts that a friend of mine donated to me and since I made the funnel holder for him, I cut up the carts to do it.

Came out okay. I don't have any pictures but Maybe I'll snap a few to add though it moved to its new home all ready.
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  #14  
Old 03-25-2011, 06:29 PM
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I like it Norm, it is a wonder what a person can come up with if you just stop and think a minute.
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Old 03-25-2011, 09:07 PM
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Norm that's just plain cool.
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  #16  
Old 03-25-2011, 09:13 PM
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Wow that cool I bet you need to have a lot of things wright to not cut it wrong or crash the lathe. Way to use the old noodle. Vernon
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  #17  
Old 03-25-2011, 09:25 PM
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Quote:
Originally Posted by allessence View Post
You wouldn't believe the crap I come up with just not to have to spend a dollar....
You have the Yankee Thrifty Geneā„¢ like me!
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  #18  
Old 03-25-2011, 10:15 PM
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Quote:
Originally Posted by Norm W View Post
This maybe should have been in machining
Yep, maybe cutter can move it.

Nice work and setup.

It just dawned on me that you are not using a milling attachment just in-feeding, I have to make a similar gear for a band-saw that is stripped, not much left to see how it fits. I assumed I have to mill straight across the full length of the teeth, if all I have to do is in-feed that would be great.

That being said, does the worm mesh half way decent or is there another plan ?
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  #19  
Old 03-25-2011, 10:19 PM
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See, lathes can cut gears with the single point tool in the chuck.

I like your mount & how it attached to the lathe. No need for a milling attachment. That was using your noggin. I think this thread needs added to the Equipment Index or Tips & Tricks index. Either would be a fine addition.
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  #20  
Old 03-26-2011, 02:33 PM
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GWIZ, It meshes a bit tight, but I'm sure the worm will "Wear" in. If you can take the gear box apart it would make things easier. As far as the fit on the opener, I used the SWAG method. It was close enough that it wasn't worth taking it apart and trimming off .003". If you match the cutter to the worm thread angle and have it match across the top (OD) of the thread it should work like a hob and cut the concave on the edge of the worm wheel. If you have an Acme thread gauge you can use it to rough in the bit. The radius of the cutter should be the same as the radius of the worm. The old wheel can be used to index, if you use the same portion of the tooth each time. There may not be much left of the teeth, but I'm sure you can find a common point even if it is the bottom of a tooth. Life is easier, if the two wheels (Old and New) are clamped together, the lead angle can be set with a square placed on the boring bar. Setting the carriage, to put the cutter on the center of the gear, can be done with a steel scale, the same way you would put a lathe bit on center. Be sure to lock the carriage in place.
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