"What is a pi shirt?", you ask? I asked the same question. My friend google soon provided an answer. It's a t-shirt decorated with symbols and numbers related to pi--that mathematical idiosyncrasy which describes the ratio between a circle's circumference and its diameter. There are plenty on the market. But you know me--why would I pay for something ready made when I can customise my own version? Besides, even though the layouts are very clever, a lot of the t-shirts are black, boxy and boring. I hope I can do better than that.
I started by checking A's size and preference in t-shirt colours and styles. Then I tracked a suitable one down at a clearance outlet for a few dollars. That way if something goes wrong I can always just try again. I already have lovely fine printable cotton fabric which goes like a dream in my inkjet printer.
Now for a bit of maths. I found a file of pi to one thousand decimal places. That should be enough to make a geek pretty happy and fill the background of my design. Next a diagram and formula. I don't have fancy design software, but Publisher was able to do what I needed. I overlayed the diagram and formula in black over a page full of numbers. I was able to match the ink colour quite nicely to the t-shirt colour.
Here's where the project is up to this morning.
Now I have to soak the printed fabric to get rid of any excess ink. When it's dry I'll use my lightest iron-on interfacing and finish it off by stitching the printed panel to the t-shirt. The final challenge will be holding back until Christmas day to see how it's received.