Friday, June 13, 2008

Back to those Slippers

Back in March, I wrote a post about an old pattern resurrected. I worked on them for a few weeks and was very pleased with the end result: a pair of vintage slippers to fit my roommate's much larger feet! I had stated in my original post that I was using the gauge of the slippers and some foot measurements to determine the size of the slippers for his adult foot compared to the original very small pattern.

Success! If you want an example of how gauge can be your friend, this is it. While gauge can be a very confusing concept (especially when it seems you just can't match the gauge on a pattern), I think this application of it really helped to consolidate in my mind how important it is to successful knitting. And since my last TWO posts have been about knitting math, this post fits in nicely with something that's been on my mind lately.

I didn't finish the slippers until April, so they're tucked away in his sock drawer until cooler weather makes its way back to upstate New York, but I'm confident they have passed the test. Now I need to hold on to the pattern for later this summer and make a set for his dad.

QUESTION TO ANYONE WHO READS THIS BLOG: I know an copyrighted, original pattern should not be posted on a website as it would conflict with copyright laws. What if my pattern took a copyrighted pattern and modified it to another size? For example, the original knitted slippers knitted up a child's slipper. The slippers I knitted are a larger size of that slipper. Can I post my version of the pattern so others could benefit from it?


Thursday, June 12, 2008

Math Helps... if you can measure...

I think my math might be off... we'll see. I mean the math is right, but I think I may have measured wrong.

KNIT KNIT KNIT KNIT KNIT....

Wednesday, June 11, 2008

Math Helps!

Sadly, one of my favorite yarn shops decided to close. The owners were moving away and didn't sell the business in time, so Handworks in Smicksburg, PA is gone. I found this out during a chance visit during their liquidation. Let's say it was a bitter-sweet day. One of my LYS closed, but all items were 50% off. I made a dent in my wallet.

A friend of mine was up visiting from Florida and saw some yarn she fell in love with (Zitron Unikat 100% wool rainbow). There were two hanks left and she bought them. We decided I would make a triangle shawl out of the yarn. Now that we're down one ball, I'm realizing how the concept of exponential growth works. By adding two stitches to each right side row, I KNOW it's going to take more and more yarn to do each row. To decide whether to move forward or to frog and make a scarf instead, I had to recall some high school math.

Knowing that one ball of yarn gave me a triangle with a base of 31 inches and a height of 22.5 inches, we were able to determine the area to be 348.75 square inches (to refresh your math memory, the area of a triangle is equal to one half the base times the height. Thank goodness I have a colleague who is a high school math teacher because the next part got tricky. You see, there's the issue of the trapezoid shape the second ball of yarn would create. We knew the area of the trapezoid would be the same area as the original triangle, and knew that one side of the trapezoid would measure 31 inches. What I didn't know was that even though I was an A+ trigonometry student in high school... I have no idea how to use the sine and cosine functions anymore (I felt a little old).

Long story short? He figured out the final measurements of the shawl would probably be a "base" of 48.58 inches with a height of 28.71 inches. I sent these measurements on to my friend, and she's confident this will be appropriate measurements for her. And if it's not, she can send work back and I'll frog it and knit up a scarf. So, now I'm back to knitting and wondering if I should buy a basic trig book to catch up... I guess that depends on whether my math teacher friend decides to help me in the future, and how many triangle-shaped pieces I decide to knit up!

By the way, the pattern is improvised, and I plan to post it when the work is done.