Are these any good?

A lot of people have used them and say good things about them. I imagine for anything less than 1mm pitch they would perform okay. Larger pitches might pose some problems.

Also, they aren't a true transposing gear set, but are instead an "approximating" gear set. My question, is if they can print an approximating set, why can't they print a true transposing set (ie, 127/100)?

Is that a Heavy 10 there?
 
SLK001 said:
A lot of people have used them and say good things about them. I imagine for anything less than 1mm pitch they would perform okay. Larger pitches might pose some problems.

Also, they aren't a true transposing gear set, but are instead an "approximating" gear set. My question, is if they can print an approximating set, why can't they print a true transposing set (ie, 127/100)?

Is that a Heavy 10 there?
Click to expand...

Should be ok for occasional light use. A lot of smaller lathes don't have enough room to swing a 127 gear. Most lathes under 10" don't have the room and not even all 10" lathes can do it.

Note some larger lathes also use 127 x 120, depends on lead screw and other gears in the chain. my 12" does.
 
I think if you have a crash, it's a good idea to have plastic gear in the chain somewhere. I have some 3d filament that you anneal in the oven after you print it. It's definitely stronger than your typical plastic and has a much higher temp rating.
 
Downunder Bob said:
Should be ok for occasional light use. A lot of smaller lathes don't have enough room to swing a 127 gear. Most lathes under 10" don't have the room and not even all 10" lathes can do it.

Note some larger lathes also use 127 x 120, depends on lead screw and other gears in the chain. my 12" does.
Click to expand...

My H10 uses the 127/100 combo and it fits just fine. In fact, all the SB lathes could fit the transposing gears in the gear train. The back end of the photo looks like a Heavy 10, but now I realize that photo was from the ebay listing, not H-M Founder's lathe.

I do know that some larger lathes need the 127/120 combo. My lead screw is 8 TPI. The 127/120 combo is for the 6 TPI machines.
 
I made my own 80/63 set using gears from Boston Gear. If you use the 80 that's already on the lathe, you only need a 63, 36 and 32 to get all the common metric pitches. The hardest part was producing the 3/16 keyway without a broach or press. Yes, it's not an exact transposition, but it is so close that for practical purposes the difference is negligible.
 
None of the listing state what material they're using. Might want to find out about that.
Here's a possible budget friendly idea.
Are there any 'Maker's Spaces' near you in NYC?
I believe that the model for that gear is available for free download.
Haven't found it yet but maybe one of the folks more familiar with the 3D printing sites can chime in.
 
SLK001 said:
My H10 uses the 127/100 combo and it fits just fine. In fact, all the SB lathes could fit the transposing gears in the gear train. The back end of the photo looks like a Heavy 10, but now I realize that photo was from the ebay listing, not H-M Founder's lathe.

I do know that some larger lathes need the 127/120 combo. My lead screw is 8 TPI. The 127/120 combo is for the 6 TPI machines.
Click to expand...
127/120 also works with 4TPI screws.
 
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