I finally got around etching my first PCB and now it is time to drill.
I be dare if I know where Mr. Carlson talks about drilling his PCB.
I need some help on what size for like a VIA of he The Ultra Probe Demodulator – Amplifier.
I watched the videos and not find what is needed.
Larry – N7LUF
What I do when need to drill for vias since the size isn’t that critical I use off cuts from T-hole resistor terminals. I take a “Caliper” to measure their diameter and choose the nearest suitable drill bit. Job done. There is a “glimpse” of how MCL does the drilling on YouTube. Is a video called ” How to make Double-Sided Boards At Home” published 8 years ago (so quite far back!) Start looking as from 50:05 time stamp
@ovi4 That was one of the videos that I remember, but did not find the size of drill used, and maybe does not matter.
I know I have heard him say before what size he used, but you sure find this stuff quickly.
I do have the drill press and drill set that he used, as I got it away back them, but never used yet.
Yes, I am very slow.
Larry – N7LUF
For any kind of PCB drilling that I ever need I always use my “tried and trusted Caliper” first. Drill size is of course always application/component-dependent
I think I found the most relevant video to answer your question. Video 59. Start with timestamp 58:50 Is worth making a text file (to keep a record of) for future use. Really usefull!
@ovi4 Thank you, that showed me I still have to make the mods to that scope I pickup back then, and it is the same as he has.
Do you have all the Transcript index somewhere?
Yes that was I was looking for needed for the small holes.
Larry – N7LUF
@larry_n7luf Drill to whatever size is needed to fit the components through. You will probably find common sizes that you use most and just use them for everything. You are further than I am with building projects, I don’t have PCB supplies yet.
Radios + Tubes + Scopes + Cars= Nothing better!
0.8 mm is the most common size.
When in doubt use a microcontroller.
@wilhelm Thank you Wil, and now looking at what I have and I am old schooled this would be “0.8 millimeters is equal to 5/16 of an inch, or 0.314 inches.”
Chatting with Mr.C he said “The small vias are .020 or what ever you have that won’t be too big to take the pad off.
The larger vias can be .032 or again whatever doesn’t take the pad off”.
Not to make this a big thing, I am sure he was talking about millimeter or inches.
Back in 2017 I bought a set and I am not seeing nothing but color coded, but does not seem to being connected to any standards.
So I have ordered a new set from Amazon, and I believe is maked better and are in millimeter.
Yes I know I could get my calipers out an mesure, but what fun would this be, and the cheap one I have now will most likely break, as you can tell I am not in a hurry and over thinking this stuff.
Larry – N7LUF
Trying to find out what I have and what is needed.
Larry – N7LUF
Would be the max at 0.8 for 20 gage wire and 0.5mm for 20 gage wire for the small via’s0.8 mm is the most common size.
Larry – N7LUF
As a side note to this; Mr C did include the via drill size within the ultraprobe probe component map. States it at .023