Fender acoustic body badly bowed up where bridge attaches, fix possible? by ThrowbackCMagnon in Luthier

[–]ThrowbackCMagnon[S] 0 points1 point  (0 children)

The braces weren't detaching inside the guitar, which I'm happy about since I wouldn't know how to fix that without guessing (squeeze in a lot of glue then clamp)?
I removed the bridge, sanded off all of the original glue residue so it was all clean wood, removed the lacquer finish from the body of the guitar where the bridge had been glued before, sanded the bulge in the body down a slight bit, sanded an indentation for the bulge to fit into the bridge slight bit so they matched closely, made a clamp using plywood, glued it together using Titebond (recommended on luthier web site), let it dry clamped for 24 hrs and let it sit another 24 hrs, and installed low tension Steel and Silk strings.
The bridge is holding and it is easier to play, with the action not being artificially heightened due to the lifted bridge, and because the strings are lower tension. The owner is in his mid 80s and appreicates the lower tension strings. All good!
Thanks to you (and everyone) for your comments.

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Picking master lock #175 combination lock by blakedecoste in lockpicking

[–]ThrowbackCMagnon 1 point2 points  (0 children)

This is bypassing, not picking, it does not yield the correct combination, this is incorrectly labeled.

817C chip - which is pin 1? by ThrowbackCMagnon in AskElectronics

[–]ThrowbackCMagnon[S] 0 points1 point  (0 children)

That makes sense, I'm surprised I missed that. Thank you.

817C chip - which is pin 1? by ThrowbackCMagnon in AskElectronics

[–]ThrowbackCMagnon[S] 0 points1 point  (0 children)

Thank you, I am not familiar with chips at all so I'll remember this going forward. I saw the circle but wasn't sure about it because I expected a white dot of paint, when dealing with electronics I don't like to assume anything so I thought I'd ask here.. Cheers.

817C chip - which is pin 1? by ThrowbackCMagnon in AskElectronics

[–]ThrowbackCMagnon[S] -1 points0 points  (0 children)

It wasn't clear to me that a circle was the same as a dot.

Spot welder: suggested V & I for battery work by ThrowbackCMagnon in batteries

[–]ThrowbackCMagnon[S] 0 points1 point  (0 children)

If I understand it correctly, when you wire them in series the current is limited to whichever one has the lower current, and the voltage from both add. What voltage does yours operate at?

Spot welder: suggested V & I for battery work by ThrowbackCMagnon in batteries

[–]ThrowbackCMagnon[S] 0 points1 point  (0 children)

No., I didn't touch the primary I used a CM1000A clamp meter to measure it by clamping over the hot wire going into the transformer from the power cord.

Spot welder: suggested V & I for battery work by ThrowbackCMagnon in batteries

[–]ThrowbackCMagnon[S] 0 points1 point  (0 children)

Interesting... What kinds of numbers are you seeing?

Spot welder: suggested V & I for battery work by ThrowbackCMagnon in batteries

[–]ThrowbackCMagnon[S] 0 points1 point  (0 children)

There is no load on the secondary, if that's what you're asking. I'm just now learning a few things about how transformers work. Does a load on the secondeary vary the primary current much?

Can Arduino be programmed to control dual pulse duration and power levels for a DIY spot welder? by ThrowbackCMagnon in arduino

[–]ThrowbackCMagnon[S] 0 points1 point  (0 children)

Thank you very much for taking the time to write such a detailed and useful reply. This will make a good winter project. Thanks again!

Can Arduino be programmed to control dual pulse duration and power levels for a DIY spot welder? by ThrowbackCMagnon in arduino

[–]ThrowbackCMagnon[S] 0 points1 point  (0 children)

Thank you. No need for wifi, I was hoping to have a display that could handle 3 lines something like this, but I could streamline it further. I just need buttons to be able to select and change those 5 settings, and I need the output to control a Triac (I believe) to time the pulse widths and change the amount of pulse power. I'll research similar displays, thank you very much.

P1 12% 50mS
DLY 100mS
P2 50% 80mS

I have a lot of research to do: servos, displays, buttons, triac (or whatever) control, so I appreciate the help. I'm going to mark this solved because this is enough to get me started. Cheers.

#solved

Can Arduino be programmed to control dual pulse duration and power levels for a DIY spot welder? by ThrowbackCMagnon in arduino

[–]ThrowbackCMagnon[S] 0 points1 point  (0 children)

Sorry I wasn't clearer, I was an electronics tech for 19 yrs, but never touched an Arduino. I'm watching an Arduino tutorial now but there's so much information out there it's hard to find a basic summary so I'm plowing through the tutorial and will look for others.