Introduction: Concrete Fingerboard Skate Park

This is a super simple project that has been a huge hit. Here's a quick overview. Check it.

Our nephew wanted a TechDeck half-pipe for his birthday this year. We thought we'd kick it up and build him his very own real concrete fingerboard bowl park. The goal was to create a unique park from materials we had on hand. At 60 lbs., this park weighs a wee bit more than our nephew.

tub/form (we used scrap 3/4" plywood and spray glued some plastic film to it)
ready-mix concrete
spray silicone or some type of mold release
and of course, duct tape

Step 1: 1. Create the Form

Create a negative mold of your desired park shape.

We built a tub from scrap 3/4 plywood and spray glued some plastic film to it. To create the bowl shapes, we used 1 larger wooden bowl and 2 smaller glass bowls. The transitions/gaps where shaped from a few chunks of styrofoam and duct tape.

Note: The mold needs to be smooth, so the concrete can release when cured.

We used caulking to make smooth transitions and rounded corners. Use your finger and a little water to smooth out generous beads/globs of caulking. Let the caulking dry overnight before pouring concrete.

Step 2: 2. Pour Concrete

Mix and pour the ready-mix concrete.

We used a full 60lb. bag of basic post concrete mix since we had that on hand. It worked ok, but cracked because the form was too thin (specs state minimum of 2" thick). The trick to a smooth final finish to knock all of the air bubbles out. We tamped everything well with a small stick. Then we beat on the outside of the form with a hammer. You will see the bubbles rise to the surface. Let sit for at least 24 hours. (we rushed it and cracked the main bowl. as an easy fix, we glued the pieces to plywood with liquid nailsback in business)

Step 3: 3. Remove Form

Carefully remove your form. If you have any cracks or bubbles, fill with non-sanded grout or other concrete patch/filler.

Add the finishing details like:

Step 4: 4. Shred!

"Cannon Ball Park" in action:


Ben+DangerH made it!(author)2017-02-19

I love this, inspired

danx_the_drummer made it!(author)2012-05-29

that is for play with Beyblades YA-HA!!!!

peterthomsen made it!(author)2012-05-29

that's a great idea! thanks.

PotatoCoffee made it!(author)2012-02-28

Very good job, Nice deck!

reref made it!(author)2012-01-25

Nice one. Five stars!

dylankunaikennedy made it!(author)2011-07-23

did you make the banana board tech deck or buy it? plz respond

peterthomsen made it!(author)2011-07-23

it was purchased

dylankunaikennedy made it!(author)2011-07-25

where and how much?

THE+total+BEAST made it!(author)2011-08-12

target/ toys r us for like $5 but idk if they still carry them

peterthomsen made it!(author)2011-07-25

sorry I don't know. it is my nephew's.

dylankunaikennedy made it!(author)2011-07-25

o ok thanks anyway

Sakrete made it!(author)2011-03-18

Excellent Instructable. Great choice of Concrete :)

tech+deck123 made it!(author)2011-01-23

awsome looooool

splatman made it!(author)2011-01-13

Reinforcing it with mesh would help. Use poultry netting or hardware cloth, shaped to follow the contours on top. When pouring the concrete, make sure the mesh/netting is not in contact w/ the mold, so it won't show in the finished product.
Another layer of mesh along the bottom, and/or some rods, to reinforce it from the bottom as well.
One way to use less 'crete, (and make it lighter too,) is hide chunks of Styrofoam in the thick parts. Just make sure they don't surface when you tap the mold during the air-purge routine. Tying them to the mesh may help. Another way is to screw small boards across the top of the mold, with legs holding down the Styro-chunks thru the 'crete. When done air-purging, unscrew said boards, remove the legs, and fill in their "footprints".
Or let the Styro-chunks surface (cut holes the bottom re-mesh for this), and remove them after the 'crete's set.
If you wish to reduce the amount of 'crete needed (or get more volume), but don't care about weight, use rocks from your backyard in place of the "Styro-chunks".

You can make your concrete a different color by using pigment. Pigment may be pricey, so you may want to leave that out.
or buy it at a hardware store.

toiletmamba made it!(author)2010-12-14

lol looks beast

Plan0 made it!(author)2010-09-07

dude this is freakin awsome, think you could make anything else out of concrete?

gl0rious made it!(author)2010-09-01

were did you get that wicked 80s board?!!??

Jebotepatak made it!(author)2010-05-12

Wonderful work masters just wondering how heavy is the concrete park?
This would be a perfect excuse to buy a tech deck!! =)

Thank You

GianniMora made it!(author)2010-04-20

 thts pretty sick!!


andrewdover made it!(author)2009-05-03

You guys rock. One of the best instructables I've ever seen......I love those Banana Board or Old School Skateboard TECH DECKS!!!

dcfingerboards made it!(author)2009-07-17

I have a banana board for sale 15$ 5 plies of veneer, cross plied, 3 birch, 2 african mahogandy

munger17 made it!(author)2010-02-05

 ill by it

DungMachine made it!(author)2009-08-24

ok. how and where?

M4industries made it!(author)2009-10-22

You can have it DungMachine
But seriously I want one of those!

roge made it!(author)2010-01-07

this is so cool just finished making one

peterthomsen made it!(author)2010-01-07

 right on. i'd love to see photos. can you add a pic to the comments here?

NickZa made it!(author)2010-01-06

hey this looks good, i like it :D

valoskater8745 made it!(author)2009-12-27

 nice like rice

baramunchies made it!(author)2009-03-24

did you pour the concrete again and a bit thicker? seems like making the mold is most of the work.

raymond123 made it!(author)2009-03-27

can you buy me a tech deck

cambigfoot made it!(author)2009-12-04


legano made it!(author)2009-12-02

i got like, 10 for $2 each at Toys R Us in the bargain bin, i don't think you need people to buy them for you :\

ultrauber made it!(author)2009-08-25


sharlston made it!(author)2009-05-04

buy 1 ur sen

dombeef made it!(author)2009-04-05


changuito07 made it!(author)2008-11-06

too hard

mrdepo96 made it!(author)2009-10-22

 what did you expect? Great instructible!

Aleksandr+Skotbot made it!(author)2009-09-21

10 years ago or so, I had a tech deck with the trucks removed and the bottom coated in felt, so I could play with it in school. (:

DungMachine made it!(author)2009-08-24

I like it. I would make it. if only I had cement...

roboff made it!(author)2009-08-09

very cool if u have the cement

baramunchies made it!(author)2009-03-24

some steel reinforcement would have helped, but i guess you know that by now.

Alex+McCown made it!(author)2009-06-14

yah concrete is strong ... vertically ... week horizontally with out rebar

tj+the+gnome made it!(author)2009-04-28

That's an awesome song in that video.

experiencefb12 made it!(author)2009-03-10

wow you guys are geniuses. that looks really fun and would be killer with a few rails.

mman1506 made it!(author)2009-03-22

yah use some bent metal rod

Derin made it!(author)2008-12-24

The concrete probably cracked because it was not watered...You have to pour water over concrete as it cures.At least that was what my grandfather who used to be a contractor.

junits15 made it!(author)2009-01-07

that is correct, the water cools the concrete making it cure slower making a better whatever it is you are making:)

Derin made it!(author)2009-01-08

I did not know why the watering helped,so thanks.

brock+da+diy+man made it!(author)2008-12-22

how mutch did I weigh??? I'm going to build one but I don't want it to be too heavy.

peterthomsen made it!(author)2008-12-23

it is a full 60 lb bag of concrete

About This Instructable




Bio: photographer. designer. maker.
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