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How much power does your NAS use? That's the first thing we need to know to get a feasible design. Second what is your ambient temperature?

OK. I stand corrected.

Isn't 37.6x3 almost the same as 1 1/2-8, which is a standard lathe chuck thread? I'd be shocked if the actual thread isn't 1 1/2 -8.

For points it doesn't matter. The color codes describe small quantities of alloying elements used to make the electrodes work better for welding. Carl

I bought a direct-drive extruder to replace the Bowden tube extruder on my tronxy 3-D printer. Cost less than $40 and works like a charm. Carl

This link shows the 2N3904 as a replacement for the 2N4124. DigiKey has no 2N3904 in stock, but suggests a 2N4401BU as a replacement. They have 41,000 in stock at a price of $0.35 each. Order page is here Carl

Seems like your VFD is exactly perfect for driving the lathe -- 120V 1 phase is limited to about 1.5 HP, so it ought to work. A 4 pole (1725 RPM) 3-phase motor would be ideal. Here's one (new) from eBay for $170 shipped: General Purpose Electric Motor 1 HP 3 Phase 56C Frame 1725 RPM TEFC...

What gearing do you have between the motor and the spindle? Is it direct drive? If you have gearing that could get you to, say, 300 RPM at the spindle for a full speed motor, a VFD would reasonably get you to 80 RPM. I would expect that your present motor is not an AC motor, but rather a...

Here's a description of the Harley Davidson engine series: History: Know your Harley-Davidson engine types - Motorcycle Sport & Leisure Carl

I got fitted for a CPAP machine a couple of years ago. I diidn't think I needed it until I saw my oxygen levels during a sleep study. So I reluctantly started using the CPAP. Now I find that I sleep much better when I use it, even though I still hate the mask. So for me, it's a net benefit.

Here's a source for data on AA4032 heat treating: If you bought it as AA-4032-T6 or T651, no heat treatment is needed. If you cast it, or bought it as AA-4032-O, you will need two steps to heat treat it. 1) Solution treatment: 510C (950F) for 2 hours, then quench in cold water. 2) Aging...

Amazon has half a dozen different optical center punches available for various prices. Carl

My recommendation is to add a PEI-coated, magnetically-attached, flexible stainless steel sheet to your printer bed. https://www.amazon.com/Surface-Spring-Magnetic-Sticker-Printer/dp/B087NPSRZK Since I bought that, I have had zero problems with bed adhesion, as long as my z-offset is set...

Thanks for pointing me to John Fall's models. They appear to be complete and will form an excellent starting point for my work. THanks, Carl

Dear members, I've been looking for Merlin plans, and it appears that the quarter-scale Merlin has headed off into the internet graveyard. I've found some Merlin overhaul/maintenance manuals that appear to give enough detail to create a model that, while not perfect, is probably good enough...

Dear Brian, I think you are asking to much for every piece of the equipment, but I'm pretty much of a cheapskate. I expect that you will not get a lot of traffic with the prices you are asking, but I've been proven wrong before. Good luck in your sales! Carl

I have had this hand shaper article from October 1955 for a while now. I intended to build it, but never have. Carl

Brian, if you haven't done a VFD conversion yet, I'd be happy to help you with it. Basically, you need to run the VFD output directly to the motor, and connect all the controls in the saw to the DC control inputs of the VFD. Carl

Beautiful work! May I ask what you were adjusting between runs? I wasn't sure the goal of the different runs. I can see you have done things very carefu)y and very thorough. Congratulations! Carl

Beautiful job! I'm jealous.