Introduction: Urban Sports - Grindoes (Updated)

Picture of Urban Sports - Grindoes (Updated)

This Instructable won the First Prize in the Converse Back to School in Style Contest. So thanks to everyone who voted for it! =)
In return I uploaded a trailer, which you can see here:

This Instructable is for everyone who likes freestyle urban sports. And for those who don't want to get rid of their old shoes.

With Grindoes (What a revolutionary and creative name - I know) you feel like Aggressive Inlining without Inliners. It is something like a training for learning how to grind with Inliners. You don't need a long inrun and it's not that bad if you miss the rail. I am pretty sure you learned to walk earlier than you learned to skate.

Actually, there is an Instructable that shows you how to make related shoes, but this one is cheaper and easier, you probably have everything you need at home and the design is less noticeable (No offence, MKohen's Instructable is really very good ;))

Summing up, Grindoes are shoes which you can grind with.

Step 1: What You Need

Picture of What You Need

Along with a weakness for extraordinary sports, you need:

- Shoes that fit: Don't take your favorite ones - They might go bust. I use my old Etnies, because they have a thick base. Normally, big and expensive shoes have thick bases.
- PVC pipe: It should have a diameter of about 4cm (16"). It doesn't have to be longer than 15cm.
- Screws: 8 small screws with a length of about 1.5cm (0.6")
- Tape: I suggest crepe tape, but every other tape is okay, too.

- A saw: It should have a more or less thin saw blade. I will come to that in step 3.
- An electric drill: You need two diameters, a thin (~2mm) and a normal (~6mm) one.
- A file: You need it to smoothen the PVC pipe and the hole in the shoes, before you use the
- Sand paper.
- A screw driver: It should fit onto the screws mentioned above.
- A pen
- Grind wax: Any candle will do.

Step 2: Getting the Pattern

Picture of Getting the Pattern

You need to cut a half hole in the base of your shoe.

To get the cutting line, simply hold the end of your pipe on the base of your shoe and copy the curve with the pen. The image shows where the hole should be. You can find the right spot when you have your shoes on and stand on a ledge comfortably. Then mark on the shoe where you want to have your hole.
Don't make it too high, or you have the plastic pressing in your foot. Take the sole out and find out where you can still cut the base away. On the outside of the shoe, you can detect it because of the stitching, which is usually a bit above the lowest point on the inside. So make your half circle a bit under that line, if you have one.

Do the same on the other side of the shoe, be sure that both half circles are parallel and symmetric.

Step 3: Cutting the Hole

Picture of Cutting the Hole

Now you will have to cut along these lines. For getting into the rubber, you can use a tenon saw like in the first picture, but when you get to the curve, you need a thin saw blade, like in the second picture.
If you want to clamp the shoe, fill it with a piece of wood or something else, so that it keeps its form and doesn't slip away.

The first cuts will be harder than the later ones, because the rubber is about 0.5cm thick (0.2") and underneath, there is a foam-like material.

Cut from both sides until half of the circle (See picture 3, I'm sorry for the bad quality, but you get the point) and then remove the part, so that you get a result like in picture 4.

Step 4: Making It Fit

Picture of Making It Fit

Hold the PVC pipe under the hole to see if it fits. Use a rough file to make the hole in the shoe rounder, so that the pipe fits in. Even if the pipe already fits in, you should smoothen the hole a bit.

Then hold the pipe like in the second picture and use the pen to copy the edges of the shoe.
The lines on the side should be accurate, while I recommend you to make the cut along the pipe a bit under the line, it will be cut away later anyway.

Step 5: Cutting the Pipe

Picture of Cutting the Pipe

Cut the pipe along the lines with the saw. It doesn't have to look nice, it will be smoothened later.
What you should hold in your hands now should look a bit like the Wiimote-batterycover.

Put it in the hole of the shoe to see whether it fits, and mark 4 points where the screws will be drilled in. These points should be where you see the screws in the second picture and the red dots in the first.
Drill these holes with a small drill that makes a hole where the screws fit in.
Then use a bigger drill to make a crater for the screw heads. You can see what I mean on the third picture. I was told this technique is called Countersinking. This prevents that they scratch on the grinding surface, so be sure that they are deep enough in the plastic.

Step 6: Fixing the Pipe

Picture of Fixing the Pipe

I still call this thing pipe, although it is not really a pipe anymore. It is more like a third pipe or something.

Fix the pipe with the aid of the tape, so that it fits correctly.
When you take a look at the piece of the shoe that you cut out (Don't chase after the garbage vehicle if you have already got rid of it - It's not that important), you will see that the point where you will put the screws in, is fully rubber, so the whole screw will be covered by rubber and not that foam-thing. When you put them into the shoe like picture one shows you (I know, it is difficult to put screws in without even holding the shoe. But I had to take the photo.), they should sit very compact within the rubber.
You can use your hand to feel if one of the screws got out in the shoe. If this is the case, take it out and screw it in again.

Step 7: Smoothing

Picture of Smoothing

Now you have to use your saw to cut along the bottom of your shoe like super blurry picture one shows you. The pipe has to be flush with the base.

Then smoothen the edges roughly with the file. Don't forget about the 4 edges, they should also be flush with the shoe.
When you are done use the sand paper to make it really smooth.

Step 8: Halftime

Picture of Halftime

Your first shoe is done.

You can put the sole in again and use it as a template for he second shoe.
The second picture was made before the pipe was fixed, but you can it do now, it doesn't matter.

When you have copied the pattern, start with the other shoe from step 3.

Step 9: You Are Done!

Picture of You Are Done!

Now you have made your own Grindoes.

But what are they good for? The next step will describe how to use them.

Step 10: Doing Tricks

Picture of Doing Tricks

It is recommendable to get some practice before you go out. A sledge is just perfect to learn how to grind.

Before every session, you should use the wax to make the shoes grind better. Rub it onto the surface where you want to slide and also on the PVC pipe.
Turn the sledge over and stand on it like in the picture, to get a feeling of the right balance. Slide your feet a bit to know how it will feel.
Then do the walk-and-jump-on-the-rail-motion slowly and carefully, before you start to do it in the right speed. At first, do some 'Kiss-the-rail's, which means that you jump on the rail very lately, only to touch it. When you feel comfortable, try it along the whole sledge. Please be careful, I don't mean to hurt anyone.

When you think you are done with practicing, go out and find some good spots to grind. Please don't damage anything, and remember to have fun ;)

This is a video showing how to use your shoes:


knighthammer_ps3 (author)2015-06-25

what about the nails will it mess it up?

c3ralki1l3r (author)2012-12-02

my nikes have some sorta of grinding thing in the middle but i will look forward to make my own :D

gizmothegorilla (author)2012-01-16

Will a bended piece of sheet metal work too if i dont have a pipe?

Salamyman (author)2010-10-25

now... i liked the paper clone ible very much but for ruining a perfectly good pair of shoes, even more Etnies - that`s unforgivable!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

JacSpark (author)2010-10-04

These look like a cool creation! i've always wanted to grind like sonic when i played it for gamecube back in the day, but the only worry i have is the PVC pipe it really going to be wide enough to fit onto rails?

cephalopoid (author)2010-07-03

Nice! I've made some myself a three years ago, using the groove in hiking boots, small metal plates with two holes from the hardware store and pointed screws which I just forced into the rubber. It didn't work out too badly. I'll post a slideshow of those one day.

LilPurpleCow (author)2010-06-13

Cool, but I don't know if I can get a hold of metal I can cut up, would a cutting board like another ible work? And wouldn't glue be a better idea? (author)LilPurpleCow2010-06-14

I think the gluing space would be too rough, so that there is too little contact to hold it safely. I didn't try it though, but if you lose the pipe during the action it could end painfully ;)

LilPurpleCow (author)kamibox.de2010-06-14

But don't the screws get in the way? And I have to try this.. Oh woops, haha didn't read it and.. nevermind. So its just a PVC pipe.. And how thick does the sole have to be? And do you just guess on about how much to cut the pipe, like half way, or should it be a certain amount, if you know what i mean?

Shoot I apparently can't read. Can you just wax the shoes instead of the rail? (author)LilPurpleCow2010-06-15

That works, but then the sliding power decreases on the rail and that makes it difficult to balance (and it looks a bit odd)

artsgottagun (author)2009-12-11

 would a tree saw work? (author)artsgottagun2009-12-12

If your shoe is flexible enough, it should.

artsgottagun (author)kamibox.de2009-12-15

 ok thanks

pocketsnzl (author)2009-12-03

i used the top of  a large diameter brass pipe (it sounds so much cooler and doesn't wear away so easily)sealed it with silicone and screws. also having the top of the pipe does not resctrict the size of pipe you can grind on as it is a less critical curve (which means its bigger). i hope this influenced all of you

MrRodrigez (author)2009-08-24

you think it would work out ok if I used Silicone caulk instead of screws? I don't know what material the silicone would bond to.. (author)MrRodrigez2009-08-25

I have thought about using silicone, too, but none of my glues could hold PVC, so I thought that silicone also wouldn't hold it. But try if you want ;) You can still use screws to fix it.

MrRodrigez (author)kamibox.de2009-11-15

 yeah silicone works great, I've been grinding rails now for around a week :D

ilike2make (author)2009-09-28

When you make the bigger holes over the small holes that is called Countersinking (author)ilike2make2009-10-02

Thanks , I will edit that.

tabler1010 (author)2009-10-01

Congrats on winning. By the way we voted for you so you owe us a new video. (author)tabler10102009-10-02

Yeah I won! :D :D Thanks for voting! :) Okay, I promise to get out during the holidays (in ~2 weeks) and make a new video :)

Minneapolis Z (author)2009-09-28

Nice Instructable, these look fun. You should upload that video to youtube or another streaming site where people don't have to have to download a file to their hard drive (author)Minneapolis Z2009-09-29

That video is just a preview, I hope I can make a better one within the next time, this would be uploaded on Youtube then.

Lizander (author)2009-09-14

Hey good job on the idea!! I made my own pair the other night!!! I quickly got the hang of it, because I practise Parkour, so I'm used to presicion jumping, but what I quickly noticed was that all the jumping and landing on my arches was very painful, and wasn't able to run very well in the next few days. maybe the cutting board idea offers more support or protection? I used 3 inch black PVC tubing.

Lettucehead (author)Lizander2009-09-26

They have pads you can cut to fit in your shoe, just a suggestion. (author)Lizander2009-09-15

I'm sorry, but I have never experienced such problems. Maybe your sole is too thin or something like that?

Lizander (author)kamibox.de2009-09-16

nope, I dont think so at least. I used some old basket ball shoes, so they are very thick soled...

Lizander (author)Lizander2009-09-16

I'll make another pair, and see if the problem continues.

theREALcybercat (author)2009-09-25

Really nice! i vote for u

Thanks :)

5533888 (author)2009-09-04


GeekyAdam (author)2009-09-03

Awesome idea! I used to want Soap shoes so bad when I was younger, but they were indeed much too expensive to justify the cost. I love how simple the design is with the PVC pipe as the grindplate. I think I'm going to try this at home; I have some old Duff shoes I don't use for skating anymore. If the PVC doesn't slide well, I might try MKohen's idea and use a piece of cutting board as the grindplate, it looks like it would grind better on some less-smoother surfaces such as concrete or stone.

covey12 (author)2009-09-01

nice, theres some kids at my school that do that crazy ninja wall jumping stuff with shoes like this

JerryMopar (author)2009-08-31

add some heeley wheels to the back, and youd be ready to stunt it out!

black bike (author)2009-08-29

I bet a coping saw would work well.

dioblo2345 (author)2009-08-22

this is great you should put it in the back to school contest!!!! (author)dioblo23452009-08-23

It is in the Back to School contest ;)

dioblo2345 (author)kamibox.de2009-08-24

oh well good luck ; ) (author)dioblo23452009-08-25

Thanks ;)

dioblo2345 (author)kamibox.de2009-08-28

ill vote for thes alright

XxCreative ProdxX (author)2009-08-27

nice project can i use converses or adiddas

I am not sure with Converse shoes, they might be too thin, but Adidas should work. Just take a look how thick the bottom is. It should t least be one finger thick.

shaneomacmcgee (author)2009-08-25

I wanted to do this a few years ago... there was a company that made these, but they went outta business I'm on a limited budget, I was wondering if some kneepads from Home Depot would hold up to that much sliding, but I doubt it...

SirBrittanicvs (author)2009-08-24

Pretty creative. I remember having a pair of Soaps way back in middle school. It might be better to use thicker PVC with a wider diameter, that way you'd have more of a grinding surface and it wouldn't get worn down as quick.

Xonah (author)2009-08-23

You should make a video with you testing it, cuz im not sure if these are really working. Great idea though (author)Xonah2009-08-24

I can assure you these do work, I have already grinded a few rails with them ;) I will probably make a video within the next three weeks, butat the moment I don' have time because summer vacations ended today :(

Xonah (author)kamibox.de2009-08-24

Aww men too bad for your, I still have 2 weeks. Do these also work on pavements edges? (author)Xonah2009-08-24

Never tried it, but it should if you use enough wax.

berky93 (author)2009-08-23

hmmm. I might have to make a air of these for parkour

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