Posted by: mspremiseconclusion | March 21, 2014

Inspiration and a Personalized Sphere


*swings open saloon door and saunters in with crochet hooks*

Just kidding. I’ve actually been here all along, I’ve just been working busily away at teaching and really not finding as much time as I’ve wanted to crochet.

You know how you go through these spells where you don’t crochet in a long time and then, all of the sudden, you’re hit over the back of the head with INSPIRATION and you’re like, “Must. Crochet. Now”, and you can’t make it home fast enough? Well, I had one of those moments a few weeks ago.

Our wonderful librarian at school was giving us a talk about all kinds of different mathematics cross-overs in different subject areas. (I’m a math geek, so I loved it.) At the very end of the talk, she mentioned some more unique mathematics books, one of which was all about hyperbolic crochet, which I had read a little about before. The book she mentioned was, Crocheting Adventures with Hyperbolic Planes by Daina Taimina, and she just happened to have her own copy with her.

I took the book home and pored over it. (I’m now asking Mark to buy me my own copy for my birthday.) It was really interesting and delved quite deeply into the mathematics side of things! One of the things that inspired me the most was that Daina had included a guide so that her readers could calculate their own hyperbolic plane, with the constant curvature of their choosing.

Light bulb! I immediately thought: this is what I need for my sphere pattern! I need to make an algorithm so that people can calculate their own, individualized, sphere.

So I took to google docs and whipped up a form (and google script) that will automatically email out a pdf pattern for the size of sphere that you specify.

Here’s what the final pdf document looks like on the front page:


Here’s what the inside looks like for one particular example:

Automatic Sphere Pattern Page 2

On the google form, you need to estimate how wide one of your single crochet stitches is (this will depend on the hook and yarn that you choose). As a reference, I use a 3.75mm hook and medium yarn, and my stitches (un-stretched) are about 0.5 cm wide.

After that, you need to specify the radius of your sphere (in cm) and your email address, so that the pdf will be automatically emailed to you. Your final sphere size will probably be a little larger than the radius you specify because the stitches will stretch when you stuff it.

Here is the google form! Note: I know it doesn’t look like it, but this window scrolls down so that you can input your information.

One final note, which I discovered while making my first few ideal sphere patterns, is that the bottoms tend to be a little pointy. This is why the last row in the pattern is unfinished by a few stitches. The loose end of yarn should be woven through every stitch in the opening and then pulled tightly to close. I find that this helps alleviate the pointiness. If yours is still a little pointy, take out a couple more stitches in your last row, then close it up again.

P.S. Please let me know if you run into any problems. I’m curious about what bugs might turn up that I haven’t found already.

P.P.S. If you’re interested in playing with google scripts yourself to generate forms, I highly recommend this tutorial, which was written by a teacher named TJ Houston. It helped me immensely!


  1. Great to see you back with some crochet. I am currently in the middle of a crochet break, so I understand your comments completely. Thank you for this information, I am looking forward to giving it a try.

  2. This will help you to know if you’re going to desire to stay simply with creative writing and allow you to to discover if you have to research other forms of poetry for example Urdu poetry. These workshops are of varied kinds or maybe more appropriately we could say comes in different forms, by way of example, writing retreat, writer’s conference and normal writing workshops.

  3. Love your blog! I’m afraid I’m hopeless where it comes to counting stitches etc, but just understanding the concept of how the circle grows (and shrinks) in a sphere helps. I actually find it kinda amazing that the math we learned at school is so practical :insert embarrassed smilie here:

  4. I loved your ideal sphere forms!! I feel almost guilty using it it’s so interesting and cool. I like maths too. I am going to make a collection of balls that are not squashed or pointy or have a lump or an area that always needs a little poke lol – Thank you very much.

  5. Wow… I am amazed and very smiley to find this form. It is very generous and clever of you to make and share this with the world. I do make my own free patterns for crochet so help yourself to mine! Left sidebar on my blog. cannot wait to have a go making spheres. Hugs,
    Mandy (UK)

  6. Thank you so much for that post,you made it much easier it’s like a caculator, i suggest if you can make a similar form for making a perfect flat circle for Rugs it was a challenge for me how to keep my rugs flat and good looking circle ,and your posts reminds me of that ,if only i didn’t forgot my maths ،thanks ⭐️I love your blog

    • Thank you! I’m actually thinking of making another one for a torus. Actually, if you’re looking for a good approximation of a flat circle, the old rule-of-thumb, increase by 6 each row, actually produces surprisingly good circles!


      • Thanks Emily,that’s interesting good luck,also thanks for the advice but increasing by 6 turns the circle to a hexagon! ,well i have been searching found good article about using the number “pi” in crochet &knitting when doing big circles ,ovals & hearts , i am looking forward for your new posts & patterns😊

  7. Thank you so much! I just finished the 30 row sphere and it came out perfect but I was hoping to make a larger one so I’m really excited to try this out!

  8. Hi! I love this idea! Thank you so much! Is the link still active? I’m not getting a place to enter my dimensions. Thanks!

    • Hi! It’s kind of hard to tell, but the ‘Sphere Pattern Information’ image is actually a little app that you can scroll down on.


  9. […] min søgen på den perfekte bold, fandt jeg dette fantastiske indlæg, hvor du ud fra din hæklefasthed og ønske om størrelse på bold faktisk kan få tilsendt din […]

  10. This is not sending anything to my email.

  11. […]  Her balls are very aptly called ‘Ideal Crochet Spheres’.  She also has an amazing tool for creating personalized spheres (in other words, spheres of any size).  You just bob your numbers into the supplied tool and it […]

  12. […] Though most of the pattern is one I created, I would like to give a major shout out to Ms. Premise Conclusion and her Ideal Crochet Sphere pattern! It may seem complicated at first, but the results are totally worth it! If you’re in need of a perfect sphere of any size, check out her original sphere pattern, large sphere patterns, or custom spheres! […]

  13. Reblogged this on Gitte Kim's Kreative Hjørne and commented:
    hvor smart er det lige! skriv dit maskemål, radius på den ønskede størrelse, din email og så sender denne app automatisk en email med opskriften! wow😀

Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s



Get every new post delivered to your Inbox.

Join 186 other followers

%d bloggers like this: