This past week I completed the transition into my new position where I work. This puts me on regular daytime 8 hour days Monday thru Friday. I said goodbye to the 3:30am alarm and the 12 hour days. They are just a little too much for me at my age (lol). With the resulting extra sleep and reduced stress I was able to start to act like a regular human being again. Now to start back with my hobby.
I had previously announced my plan to build a 2N2-40. I was able to procure a lot of the parts and other needs at Dayton this spring. I had seen a blurb on one of the maker sites about using a diamond tip tile hole saw to make “islands” for Manhattan style construction. I found the saw at my local big box hardware. Below is card and a view of the saw.
I setup the drill press and tried it out. Wow, did it do a nice job. The islands are about the same size as the ones that you glue on. I guess you could use this saw to make them. My plan is to just drop the bit far enough to remove the copper to create the island. The drop figure I used is 0.02 in as I noted on the card for future reference. Below is a picture of the finished product.
The two circles in the back are what the hole saw cut. The resistor is mounted across two islands with the cap as a bypass to the ground plane.
The disadvantage (or not) I see with this technique is that once the Island is cut there is no moving it. For projects with a established layout this is not a problem. Experimentation might be a little difficult but still could be done. I had a little issue with the rosin flux running into the groove. A little alcohol cleaned it up well. A suggestion from the QRP-L list was using paint or nail polish to provide a better look to the finished product. I was thinking about using a color for Tx and another color for Rx circuits.
So now I guess I need to get going on the rig. Ok now, what did I do with those parts?