r/machining

A tensioner assembly we just knocked out. Bearing pockets on the sprocket were bored on a bridgeport. With braze on carbide. So were most of the other holes. Fun times. But the finished product looks neat!
🔥 Hot ▲ 126 r/machining+2 crossposts

A tensioner assembly we just knocked out. Bearing pockets on the sprocket were bored on a bridgeport. With braze on carbide. So were most of the other holes. Fun times. But the finished product looks neat!

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u/GreenridgeMetalWorks — 6 hours ago
🔥 Hot ▲ 57 r/machining+8 crossposts

The foam thickness math that explains why your bracers always come up too tight

u/baddog121 — 2 days ago

How much should I be selling a CNC lathe for?

I recently inherited a CNC lathe when my uncle died and I was wondering if I would be able to sell this because I doubt that I will be able to really use this and make good use of it, and it might just be more of a money hole for me. I visited a few websites and found that the CNC lathe machines are listed at $4,000 and $5,000 on sites like alibaba and amazon which I guess would be cheaper than buying from a store. I am wondering how realistic are these prices and if I should be pricing upwards or downwards and what would be the differentiating specs that I would need to look in order to determine the price.

I also do not want to pay for transport costs so if someone is intersted in buying is it unreasonable to have them pay for the shipping and transport fees?

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u/checkmatetiger — 1 day ago

What machines do I need to make my own wheels and pinions?

Recently, at my university I took a milling class. We learned to operate a Fehlmann P18. This really kicked off my enthusiasm for mechanical contraptions and clockwork mechanisms. This gave me the Idea to make a simple weight-driven clock out of brass. I have been reading and have a more or less clear idea on how the gear train, escapement mechanism and pendulum should be designed; the problem is I don't know what machines I need to build my own gears.
I haven't found much information online; however I've read a watchmakers lathe or a mill can be used. What are affordable machines you recommend I use? Should I buy a fly cutter?, what drill bits do I need? As you can tell I am unfamiliar with the horological world and need good advice.

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u/Livid-Construction14 — 5 days ago