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How about a -- "Sound Pressure Level" --? Before & After comparison? Regards, John Georgia USA *From:*[email protected] [mailto:[email protected]] *On Behalf Of *John Lindo *Sent:*

Very nice John, great machining as always. Like Charles will be interested to see if quieter and by how much. Barry Australia

Hi, John, I am very much looking forward to hearing if they are actually quieter, once installed. Very nice machining job, as usual! -- Regards, Charlie New Jersey, USA *LAW OF ANNOYANCE: When working

Very pretty. John Sent: April-05-20 4:33 AM To: [email protected] Subject: [digitalhobbyist] #LATHES New H/L mini lathe gears. Recently cut new aluminium H/L headstock gears, I replaced the

New H/L mini lathe gears. Recently? cut new aluminium H/L headstock gears, I replaced the nylon gears to steel some years ago, after breaking several sets, the?steel worked OK but were very noisy.

Lewis Very well done re 3D printing and a big thanks I am sure from the front line medics. -- John

I am enjoying my isolation in the garden! Ralph

Thanks John We're locked tightly in the house here in eastern Canada and coordinating the 3d printing of face shields for 100s of ER doctors. I can read about other stuff at the moment but can't seem

I wish all forum members and families, and the total world population the very best of health during this tragic epidemic. We have NO boundaries that this virus will not find a way to get at us.

I’ve got one too. But I’m left handed ! And need one.

Do you have a DRO on your mill? If you do you could whip up a couple of Arduino stepper drive controllers that just give you variable speed and use them as power feed controllers. If not then there

Hi John and everyone, As you can see, I’ve just added a brute (12nm @ 6amps) of a stepper motor to my mill. The question that I have is what is the easiest / cheapest way of providing a digital

Hi Ralph, This is an area where ....angels fear to tread. From your picture it would seem that you either have an AC drive or a stepper motor drive. Either is not good from a noise point of view, but

Thanks John, just had a lightbulb moment it is starting to sink in. Ralph wrote:

Thanks Bob, that is interesting. I tried looking at the encoder signal with my oscilloscope, which I do not know how to use, and the signal looked really messy, not clear steps as expected. re:

Yes that would work Ralph ! Of course you then might have to worry about getting the grounding of the motor really sorted to stop coupling of the drive power signals into the encoder. I’ve spend

See below. Sent: March-21-20 8:46 AM To: [email protected] Subject: [digitalhobbyist] Spindle speeds John D sharing his spindle encoder speed to leadscrew stepper has me thinking, actually I

John D sharing his spindle encoder speed to leadscrew stepper has me thinking, actually I have been mystified/wondering about this for a long time. This is a question. If I have a 8tpi (thread per

Thanks for the replies, and everyone is welcome to jump in. Bob my encoder is mounted directly on my motor. [image: IMG_20200321_102907196.jpg] Ralph

Hi Ralph, excuse me but I have been “lurking” on this thread and wanted to add to the discussion. It’s quite possible that a chunk of your jitter problems are coming from your method of driving