Kerry

Here’s the board mounted in the probe.

I used a 10 mil flat end mill. You need a really short flute. Length of cut should be about 15 mils. I did several passes since the board wasn’t completely level. Fun stuff Edit: I’ve had no luck with v shaped tools.

I just milled this board for a CNC probe I’m working on. Those are .01” slots. I’m surprised I could do this

🤢

Just a note. There are a few videos on the internet on this (not many). I wanted to be clear that I mixed the alum powder with water about 4 tbsp / cup (or as much as can be dissolved). Some of the videos show mixing it with acid, which is not necessary, so therefore not advisable. The alum I used was a non-ferrous food grade version, so I could pickle some tomatoes or cucumbers if I'd like with the extra

A few months ago a broke a #4-40 tap in a heat sink. After a lot of cursing and futile attempts to get it out, I just left it for another day. I felt compelled a few days ago to go after it again. This time I came across an article on the use of alum powder to dissolve the ferrous metal (tap) from the aluminum without affecting the aluminum. Long story short, I got some potassium alum powder, set up a double boiler with a Pyrex container and six hours later and a little baby sitting, the tap was gone and I was able to save the threads and all. Kind of amazing. You can see the small bubbles coming from where the tap was. Note that I don't remember any chemistry, so I'm hoping this was safe. 20200227_181723000_iOS.MOV

Happy Birthday! Enjoy

Happy Birthday!

Happy Birthday!

Happy Birthday Colin! Hope you’re having an awesome day 😊

Have a great day!

Happy birthday!

Regarding the Offset servo, I use OPA197 in my T2 build and have not had any failures.

Will it be fully evaluated (disassembled)?

And more ^

Multi-purpose stands... Very nice

Happy birthday Jeff!

I wish my kids cared more about high quality audio. Very nice of you indeed.

Very interesting. We enjoyed them on my T2 and Carbon

Wow! Now that’s how porn is done

Happy Birthday Adam!

Happy Birthday!

Happy Birthday Grahame!

I’ve been able to run the regulators with a 12-15v differential. Yes load can come into play. To be safe you should add another 10% on top of the desired HV plus the differential. That’s to accommodate voltage variations of the mains, which may not be applicable for you.

Happy Birthday!