melted crayon rocks

How to Make Melted Crayon Rocks

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Melted crayon rocks are made by “painting” on hot rocks with crayons, which melt as they touch the heated rock. This post shares tips and tricks for success.

Melted Crayon Rocks

Aren’t these melted crayon rocks beautiful?! This is something we’ve done a few times over the past few years and is one of our favorites. I could have sworn I had posted about this before, but I guess not.

The rocks shown here were “painted” by Maia with the melting crayon. She especially loved the light blue and melted the entire crayon down to a nub.

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How to Make Melted Crayon Rocks

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  • Small, smooth rocks
  • Crayons (to protect fingers, do not use short stubs)*
  • Oven
  • Baking sheet
  • Towel or mat to protect your table
  • Foil

A Note about Crayons: Any crayons will work, however, we’ve found that beeswax-based crayons and soy crayons work a bit better than petroleum-based crayons. The coating ends up waxier and more opaque. More beautiful!

Instructions for Making DIY Crayon Rocks

Melted Crayon Rocks

We are lucky to have a good supply of small rocks in our backyard. We gathered a colander full and washed and dried them.

Melted Crayon Rocks

I spread the clean rocks out on a foil-lined cookie sheet and put them in a 350 degree Fahrenheit oven to heat up.

Melted Crayon Rocks

Once the rocks were hot, we transferred them one or two at a time to a protected surface to work, leaving the rest in the oven.

The table was protected with a placemat, a washcloth, and a piece of foil. Possibly overkill. The foil is pretty necessary to catch the melting crayon and I think a washcloth or towel is wise to keep the hot rock from damaging the table surface.

Melted Crayon Rocks

Have you tried making melted crayon rocks?

The crayon melts over the surface of the hot rocks and creates a smooth, vibrant, colorful coating that hardens into a waxy shell.

It is SO satisfying. A tad addictive even.

After working on this batch of rocks together while Daphne napped yesterday, Maia collected a second batch of rocks to work on with a friend.

Melted Crayon Rocks

The melting crayon is so liquid it’s like painting with crayons. You can use one color or several. Make designs, swirls, dots, stripes, faces, whatever.

Melted Crayon Rocks

We used a variety of crayons, but mostly these push-up wax crayons, just because they were handy at the time and work so well. Plus the plastic handle keeps the crayon safely long even when the actual crayon piece is down to a nub.

Note: The Jolly push-up crayons shown here no longer seem to be available. However, we have made these rock crayons with many different kinds of crayons. These beeswax crayons are our favorite for this activity.

Melted Crayon Rocks

Here are some of Maia’s melted crayon rocks.

Melted Crayon Rocks

And some more.

Melted Crayon Rocks

And some of mine.

If you haven’t done this yet, give it a try! And if your kiddos are too young to be working with hot rocks, then do it yourself while they nap. I bet you’ll love it.

More Ideas for Melted Crayon Rocks

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Melted crayon rocks are made by "painting" on hot rocks with crayons, which melt as they touch the heated rock. This post shares tips and tricks for success. #rockart #kidscraft #kidsactivities #rocks #rockpainting #artsandcrafts #crayon

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37 Comments

  • Reply
    Moriahesther.wordpress.com
    June 6, 2012 at 7:49 am

    This looks like our kind of fun! My son has a rapidly growing rock collection and I’ve seen many ideas for “story rocks”. Whoever his most loved rocks morph into a pizza slice or an airplane within minutes of each other so I have left them organic. I love this idea because it leaves imagination intact. Just yesterday I read your article about sewing a dress with pockets for Maia because your hands were full of her rocks when she was little. It was especially sweet for me to see this post today. Thank you for sharing.

  • Reply
    molly
    June 6, 2012 at 8:22 am

    Jean, I can’t tell you how much I LOVE this project. (I know I say that like every day…) My grandma was a geologist so I always have a special place for rocks in my heart. Can’t wait to try it. xo

  • Reply
    MaryAnn F. Kohl, art book author and educator
    June 6, 2012 at 11:35 am

    One of our family’s favorites! Here’s another twist on the same fun: Color on rocks or even paper or cardboard. Place the colored works in the sun for the day and check on them now and then to see how the crayon is melting. You need a hot day and full sun.

  • Reply
    louise
    June 6, 2012 at 3:12 pm

    I’m so excited to try this. I’ve seen it going aroudn the internet and am waiting for the kiddo to get out of school to try it. I think I’m probably more excited than he’s going to be! :)

  • Reply
    Lori N
    June 6, 2012 at 5:17 pm

    Gorgeous! We will definitely do this soon.

  • Reply
    Ann
    June 6, 2012 at 5:56 pm

    We just made these and it was so much fun! It was interesting to see the difference between the Rose Art crayons which were very translucent and the Crayola crayons which were more vibrant. My son had fun and I like activities which help him develop concentration because he has to be careful. Thanks for the idea!

  • Reply
    Julie Liddle, ART IN HAND
    June 6, 2012 at 6:28 pm

    Jean, I do believe you HAVE posted about this before, because I know I learned about it a couple of years ago from you. You may have linked to another blog about it rather than using your own experience, but I know I got it from you…
    A great project, indeed…my 9 year old loves it.

  • Reply
    amanda
    June 6, 2012 at 8:34 pm

    We did this about an hour after I read your blog. It was a smashing success. Thank you once again for the inspiration. My whole family benefits!
    much love,
    Amanda

  • Reply
    kimira
    June 6, 2012 at 9:35 pm

    Thats really creative. We have tried melting crayons with a candle and putting them on paper, but this is so much more fun.

  • Reply
    Jean Van't Hul
    June 6, 2012 at 7:08 pm

    I was sure I had, too, but I tried all kinds of search variations and couldn’t find it. Oh well. It’s a new experience each time. :)

  • Reply
    Jean Van't Hul
    June 6, 2012 at 7:08 pm

    Yes, there are lots of differences between crayons and sometimes they come out more in projects like these.

  • Reply
    Jean Van't Hul
    June 6, 2012 at 7:12 pm

    That’s interesting about how he plays with the rocks. Maia and Daphne haven’t been playing with ours as pizza slices or airplanes or whatever. Rather, they’ve been arranging our rocks into circles and, in Maia’s case, into letters and such.

  • Reply
    Jean Van't Hul
    June 6, 2012 at 7:12 pm

    Hope you have fun with it!

  • Reply
    Jean Van't Hul
    June 6, 2012 at 7:15 pm

    We’ll have to try coloring them first and then putting them in the sun to see if they melt. Although it’s hard to beat the fun and immediate gratification of melting the crayon on the hot rocks. Perhaps we could take our crayons outside on a hot day and see if the rocks are hot enough to melt the crayon.

  • Reply
    Jean Van't Hul
    June 6, 2012 at 7:15 pm

    That’s okay. :)

  • Reply
    Jean Van't Hul
    June 6, 2012 at 7:15 pm

    Yay! Have fun with it.

  • Reply
    Robin @ tansydolls.blogspot.com
    June 7, 2012 at 10:36 am

    I’ll definitely have to try this at home with Aria. We already have quite the rock collection since she insists on gathering new ones every time we leave the house. She isn’t really into crayons all that much as she prefers her watercolors and markers but I bet a project like this might elevate those crayons to a place of honor. :D Thanks for the idea!!

  • Reply
    Jean Van't Hul
    June 7, 2012 at 9:13 am

    So glad it was such a success!!

  • Reply
    Jean Van't Hul
    June 7, 2012 at 10:52 am

    Thanks. We’ve melted crayons and painted with them (with paintbrushes), but it wasn’t terribly successful for us. I think our melted crayon was too cool or something.

  • Reply
    Jean Van't Hul
    June 7, 2012 at 10:53 am

    You’re welcome!

  • Reply
    mama
    June 7, 2012 at 10:02 pm

    They’re really beautiful. I’m concerned about washing them ahead of time because water trapped in a rock and then heated turns into steam that, to escape, will explode the rock (that seems to be a pretty well known idea around, but was a total surprise and scare to us at a beach campfire one night!). Maybe just a very slightly damp cloth to wipe off any larger particles on the rock?

  • Reply
    cathy pratt
    June 7, 2012 at 10:35 pm

    This is such a fun idea. We’ll do this at our next homeschool gathering that happens on a rainy day. It seems like the perfect thing for kids of any age. I’M excited to try it. Our gardens are sprinkled with surprise drawn upon and colored rocks of all kinds, such fun to seek and find. Thank you for posting.

  • Reply
    Dena
    June 8, 2012 at 4:38 pm

    I love this, nature and art is the best. Wish Naomi was old enough; will definitely remember this one. Thanks Jean!

  • Reply
    Amy Fields
    June 10, 2012 at 7:58 pm

    This looks like so much fun! We will have to give it a try.

  • Reply
    Julie Liddle, ART IN HAND
    June 14, 2012 at 12:31 am

    Ditto re. the search. Strange. At any rate, have you seen these? An interesting variation on the theme:
    http://www.google.com/search?q=melted+crayon+art&hl=en&rlz=1G1SMSN_ENUS471&prmd=imvns&tbm=isch&tbo=u&source=univ&sa=X&ei=4WjZT8m1A6rW2AXplv29Bg&ved=0CFUQsAQ&biw=1366&bih=682
    Apparently, there’s a world of amazing melted crayon art going on out there!

  • Reply
    Rina
    July 12, 2012 at 10:29 am

    Fabulous project for art camp. So glad I found your blog!
    Rina at http://www.k6art.com

  • Reply
    Bella
    July 16, 2012 at 3:37 pm

    These look just wonderful! I love rocks and since I can’t help collecting them, I’m always on the lookout for interesting ideas. Can’t wait to try this!

  • Reply
    Sara Rivka
    July 17, 2012 at 10:59 am

    Fabulous idea Jean, thanks so much! Just posted our version of your project and linked back to you as the source of inspiration for the project! http://www.creativejewishmom.com/2012/07/melted-crayon-art-on-rocks.html
    all the best and keep up the great work!

  • Reply
    Aillsa
    September 25, 2012 at 8:54 pm

    Odd question- but could you do this without an oven? We live in China and no one has one, could you steam them or microwave them? Thanks! :)

  • Reply
    Renee
    November 4, 2012 at 9:28 pm

    Aillsa – you could make a solar oven – a foil-lined box with a piece of clear glass or plastic on it, placed in full sun for a bit, should make the rocks warm enough to melt the crayons. Be careful to use appropriate hot pads/oven mitts when handling the rocks. My son (9) loves to make these ovens and cook hot dogs on a skewer for his brother (5) and himself. Just a thought.

  • Reply
    Adela
    December 29, 2012 at 2:43 pm

    Thank you!My girls loved this project!
    http://gradinitaalphabet.wordpress.com/2012/12/29/pietre-cerate/

  • Reply
    Adela
    December 30, 2012 at 12:22 pm

    Sure you can!Boiling them would do the same thing!

  • Reply
    Angeline
    August 29, 2013 at 9:16 pm

    What a GREAT idea! I just came online trying to find some new ideas for my children… I’ve discovered your site and it’s FULL of unusual ideas! We’ve just done this one…so easy, so much fun! Thank you!! : )

  • Reply
    Melanie Mitchener
    October 19, 2017 at 4:39 pm

    Do you seal them after they dry? If so, what type of sealant?

  • Reply
    Zarina Diyas @ Hacks & Diys
    June 22, 2018 at 6:56 am

    Hey jean. Amazing idea you have share with us. From a little crayon we can do so much things. I have posted on how to make candle with crayons. Check it out : http://hacksdiys.com/home-living/decoration/making-colorful-candles-with-crayons-at-home-instructions/

    • Reply
      Jean Van't Hul
      June 23, 2018 at 6:10 am

      That brings back memories! I used to make candles with melted crayons when I was a little kid. They didn’t turn out quite as professional looking as yours, though. And I set our porch on fire once. (Things a first grader shouldn’t do unsupervised.)

  • Reply
    Andrea
    November 25, 2018 at 9:57 pm

    Can you recommend a sealant? I just made these with my kids and now I have crayon on my bedspread! My kids love carrying things around in their hands….

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