Steve Crow | 08/12/2021 16:18:24 |
429 forum posts 268 photos | I spent the weekend cutting gears. There are 3X12, a 14, 15, 16, 18 and a 20 tooth, all Mod 0.3. More sizes than I really need but setting up for pinion cutting is a bit of a pain so I thought I would "future proof" my parts box. You never know when you might feel a five-speed gearbox coming on. Steve |
John Haine | 08/12/2021 16:22:57 |
5563 forum posts 322 photos | Nice! |
Brian H | 08/12/2021 16:29:15 |
![]() 2312 forum posts 112 photos | Hello Steve, nice work. What are they intended for? Brian |
Steve Crow | 08/12/2021 16:55:30 |
429 forum posts 268 photos | Thanks Brian, I will be using some for a 1/12 scale V8 for the cam gear train and some more for a tumbler reverse gear in the matching gearbox. Also I may use some for motion work in a clock project and to make a spur gear differential. Steve |
Nigel Graham 2 | 08/12/2021 17:57:12 |
3293 forum posts 112 photos | Fine work! ' May I make a suggestion applicable to any divided and parted-off batch-work, such as hexagons, not only gear-cutting, in that style? I found it better, if possible, to make initial parting-tool grooves in the appropriate places first, to very slightly below the roots of the features (spanner flats, I think I was making). Then perform the milling, which does not mind working across grooves provided you go steady with the break-throughs if using a slot-drill. In this way the parting-off is never on 'orrible interrupted cuts. |
Steve Crow | 08/12/2021 18:11:26 |
429 forum posts 268 photos | Thanks Nigel, I did initially consider pre-parting them and I now wish I did for a few of them. My problem is, apart from half a dozen gears, I don't know how thick I might want any other pinions to be. I hate parting off gears. The teeth act like a musical box with a loud high pitched whine. |
Vic | 08/12/2021 22:22:02 |
3453 forum posts 23 photos | Nice job and I agree with the sentiment of making a few more than you need. |
Jouke van der Veen | 10/12/2021 14:25:57 |
203 forum posts 19 photos | Parting off with a circular saw in a mill should avoid the “musical box” effect. |
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