Step 2: Cut Out a Circle

First, fold the piece of fabric over in half. Next, we outlined a circle on the fabric using a pot cover. Our circle ended up having a diameter of 12 in. We found this fit our 5 lb. bag of rice quite well, though there was some extra space. We speculate that a 10 lb. bag could be stuffed in here.

Pin both halves of fabric together and cut out along the line.
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this may not all be an active thread since everything I'm seeing was 2011 but couldn't you just fill it before closing and eliminate the zipper altogether?
The idea of the bag is a good one, as far as it goes, however five to ten pounds of stuff in the bag is insufficient for strengthening any major muscle group. This could work if you added more weight to it so greater benefits would result in using it at home.<br><br>If you made a simple change to the bag by adding a longer, sturdier handle it could be swung around over the top of your head in large circles. You would then have a great center torso trainer. <br><br>A shorter handle will make it into a kettle bell. <br><br>Handles on the side would turn it into a nice outfit to use on your planks, or Russian twist exercises.<br><br>Nice idea, keep up the good work.<br><br>Danny
thanks for the comment and suggestions. <br><br>the light weight is good for high reps and moving from one exercise to another i.e. getting the heart rate up.<br><br>but i agree 5 - 10lbs is light for strengthening major groups. i suppose it's just a limitation of the materials i had on hand. 5-10lbs are still good for some core exercises, anterior/later raises, forearm work, etc...<br><br>i have been working on a 25 - 30 lb model. which i will append to this 'ible once complete.<br><br><br>
Love the idea and I'm gonna do one. <br>I dunno about light weight not strengthening major muscle groups, I work in heavy construction and swinging a ten pound sledge for hours to demolish concrete, or lifting sheetrock repetetively sure is a huge workout...you don't get &quot;big&quot; though like bodybuilders. And no disrespect to the athletes who participate in powerlifting and bodybuilding (an endurance sport in its own right) but few people benefit from the ability to lift engineblocks 8-10times, but everyone can benefit from working with lighter weights regularily.<br>Strength has so many facets.
I'm only thinking this through in my head, but wouldn't it be easier to install the zipper as you would in a clothing item, by closing the seam, laying the zipper on the closed seam and stitching it in, then opening the seam to reveal the zipper? This would be done, of course, before stitching the other half of the circle closed. You'd be working with a semi-flat seam area this way. Might this work better? Otherwise, excellent sturdy construction! I like this idea. And it's washable! <br>Kathleen
That's how I sew in my zippers as well - I find it much easier. :)
i'm an amateur in stitchery so I've never heard of this trick before. <br>Thanks for the tip! I'll definitely try this next time!!
<a href="http://sewmamasew.com/blog2/2007/05/installing-a-zipper-tutorial-by-michelle/">http://sewmamasew.com/blog2/2007/05/installing-a-zipper-tutorial-by-michelle/</a><br> <br> This is a really great tutorial on it, if you're interested. :D<br>
I'm utterly challenged sewingly, and have to say it's not immediately obvious to me how to apply that tutorial to sewing a zipper to the side of a ball!
brilliant idea, however muscular tone cannot be changed by exercise.
What a great idea!! I love it!
Brilliant multi use of a riced-filled bag. even if one accidentally drops it on their toes, it would not hurt too much. I love the triceps workout, it's always so hard trying got concentrate on the work out when my hards are gripping on the weights so hard, that I loose feeling on my fingers. Thank you for a wonderful idea.<br><br>~ Sharon
That is an absolute beauty and an amazingly versatile weight! I applaud your creative combination of systems out there. I have very nice pebbles on the beach at my house which are just begging to be put to a good use like that.
That's awesome! Good use for all the leftover white rice in the house if your new diet calls for brown rice instead!

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More by butterbeans:Pi-Day Pecan Pie with Maple Rum Raisins Bacon Spice Pork Chop Cookies Improve strength, tone muscle, and increase flexibility + explosiveness: Dual-Handle Weight Bag 
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