StumpChair (facebook.com/StumpChair) was met with quite a bit of success in the past few years and it got me thinking about what else I could make into a chair. Rocks seemed liked like the next logical place to go. Drilling holes in rocks is much more permanent and damaging than in stumps so public installation didn't seem appropriate without permission. For this first version of the RockChair I decided to bring a rock into the shop. This rock was purchased from a landscape supply company and the chair was assembled entirely legally at the Pier 9 in San Francisco. Aside from that, the process is almost identical to StumpChair. (http://www.instructables.com/id/StumpChair/)

Step 1: What You'll Need

Picture of What You'll Need

A Big Rock - Boulders can be purchased from landscape supply yards as mine was, or you can probably find one lying around if you don't live in a city.

A Chair Back - I always have an eye out for broken chairs that people are discarding. Discarded chairs are surprisingly common.

Epoxy - You will probably need more than you anticipate.

Spray Paint (or brush on paint if you want to get fancy) - Only if you want it.

Hammer Drill - A regular corded drill will probably work but hammer drills really are amazing tools for drilling in stone and concrete.

Masonry Drill Bits - WARNING regular drill bits for wood or metal will NOT work.

A Cart - This is optional(ish). If you have two strong friends who are willing to help you out you probably don't need a cart but it really will make the whole thing easier. Instructions on making a simple cart are in the next two steps.

Safety Glasses - I forgot to put them in the photo because they were on my face already. Oops.

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Kathy681 year ago

This was the 1st video l have seen since joining this site....COOL!!

Did you drill with a Diamond drill bit? If not what kind of drill piece?

Due to loving colour l wouldn't be able to stop at one chair.. :-)

CobyUnger (author)  Kathy681 year ago

Glad you like it.

The drill bits I used were not diamond bits. Masonry bits will work just fine. You can find them at a hardware store or online.

Check out StumpChair too if you like RockChair. (https://www.facebook.com/StumpChair) (http://www.instructables.com/id/StumpChair/).

Thanx...I will def' check out ur work :-)

chrispolk Kathy689 months ago


mflorez1 year ago
Mount wheels to bottom and call it "rock and roll"
trentcole mflorez9 months ago

rock and roll

stindler12 months ago

put some cotton or spunge on top of it.. for your butts sake

lol yeah

sunshiine1 year ago

This is great! When we move I will make one and post a picture. I love it. Thanks for sharing your hard work and do have a splendorous day.


CobyUnger (author)  sunshiine1 year ago

I look forward to seeing your version.

I will be making one but not until after our move. they tend to be quite heavy! I wish you the best in the contest!
ptrobrn1 year ago

I think a rocking chair would be a better use.

Deltic1 year ago

Quite right to promote the use of safety glasses - a shame your hearing will be shot by the time you're 40 because you failed to use ear defenders! I'm in my early 50's & have suffered with tinnitus for the last 10 years, it is not pleasant. Please people PROTECT YOUR EARS when using loud tools & machinery.

CobyUnger (author)  Deltic1 year ago
You are completely right. Thank you for pointing that out. I should have been wearing ear protection. It was quite a loud job. Today in the workshop I was very sure to protect my ears.
dbicher1 year ago

Wonder if you could use one of the 'fake' rocks that you also can buy at masonry yards? We have a large sturdy one in the front yard that feels like it will last for years and is indistinguishable from a real rock unless you look very closely. Bought it specifically because my son wanted a rock he could sit on (and he's in college!) Only weighs 40 pounds or so, (the rock, not my son) is about 4' long, 3' wide, and 2' high. Cost about $115 as I remember. They come in many colors, shapes and sizes.

CobyUnger (author)  dbicher1 year ago

My guess is that it would work fine. Might not be quite as stable since the fake rocks are usually hollow. Give it a shot and don't forget to post photos if you do.

tinker0001 year ago

Great addition to the stump seat maybe next a bunch of backs on a fallen log in a park or something? Does your table in the office swing? Need an Instructable on that.

CobyUnger (author)  tinker0001 year ago

A fallen log would be fun for sure. The office table does indeed swing. I don't know who built it but it is very fun for sure.

Oldbear1 year ago

This is what we need more of; time take to sit and reflact. The couple in the video stopped and rested, maybe had a good conversation...

CobyUnger (author)  Oldbear1 year ago

Shel Silverstein's book 'The Giving Tree' was part of the original inspiration for this series. The character in the book recognizes the value of taking time to sit and think.

fixfireleo1 year ago

i'm guessing you wouldnt want to proudly present mom and dad or grandma and grandpa with this chair...they would probably kindly inform you that they stopped being able to sit on rocks 20 years ago or more. lol. cool idea though.

CobyUnger (author)  fixfireleo1 year ago

I suppose not, it is not the most comfortable chair in the world for sure.

Thanks for taking the time to film the video and for using Vimeo. I am sure you got a lot of satisfaction watching that first person enjoy your handiwork.

CobyUnger (author)  dhodgkinson1 year ago

You can thank the Charlie, the Pier 9 Digital Storyteller for the video. It is always fun to see people use the things I make.

rippa7001 year ago

Love it! I have several old spindle chairs and was just toying around with ideas to use them. This will be one now - thanks!

CobyUnger (author)  rippa7001 year ago

Great! Be sure to post photos when you make one.

Having a client chair like that would sure make for shorter client meetings!

CobyUnger (author)  Snidely704481 year ago

It definitely encourages you to stand up.

cia5591 year ago
CobyUnger (author)  cia5591 year ago


samalert1 year ago

Sore bum's and still rocking !

CobyUnger (author)  samalert1 year ago

I used it as a desk chair at work for about a week. It made me stand up and go to the workshop more often.

That is so cool! I think the red chair back is the icing on the cake! :)

CobyUnger (author)  doodlecraft1 year ago

Thank you. Color is key, it really makes a big difference.

CobyUnger (author)  hasanhuseyincan1 year ago


zposner1 year ago
That ROCKS!!!
CobyUnger (author)  zposner1 year ago


Cool! I wondered what the story was behind that chair I saw in the office :)

CobyUnger (author)  Penolopy Bulnick1 year ago

Now you know.

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