I actually have a legitimate excuse for going stupid. More of that in a moment.
This morning I woke up and knew exactly what I needed to do.
I used a straight bit with a bearing to cut a rabbit in the bottom of the box. This leaves curves in the corners. I decided to match the curves on the bottom part which had 90 degree corners. I found a bearing which matches the curves created by cutting the rabbit. Placed the bearing in each corner of the bottom piece, traced the outline, cut along the lines on the BS and then sanded, perfect fit.
Now the rest of the story, as Walter Winchell us to say. Several months ago my cardiologist doubled my BP scrip. I asked if I could use up the existing pills by taking two, no problem. When I went to pick up the new scrip it was wrong. Called and my doctor was out of town but they would have a different doc correct it. He did not fix it, he changed my medication completely and included a diuretic. When I called the office my doc was out of town for vacation. By the time he returned he said he did not want to keep swapping my meds around so just go with what I was taking. Slowly but surely my muscle pain keep getting worse. I started having problems with confusion. Over Easter I had a really bad stomach issue and could not keep anything down. I did not take my meds for 3 days. I got out of bed one morning and nothing hurt. The doc cut the dosage in half and deleted the diuretic. I have not hurt since. This morning my mind was as clear as it has been in quite a while.
How this other doc could change medication on a patient he had never seen is beyond me.