- Whoo.
Hi, I'm Bob Schrupp, physical therapist.
- Brad Heineck, physical therapist.
- Together we are the most famous physical therapists
on the Internet.
- Well in our opinion, of course, Bob.
- Brad, we've done some videos
on how to use this wobble board and when to use it.
But today we're gonna show you how to make one, right?
- Right. Absolutely. Okay.
- That's a really handy guy, so.
- Good. Yeah. Can you get off of that?
This is a nice wobble board
that we purchased and we use it in the clinic.
It's made by Extra Tools.
It's a nice one.
And if you're like me and you wanna save some money
and you're handy and you like making some things
you can make one of these for less than $10.
- [Bob] Wow.
- Yeah. This one here is probably $50 to $60.
- [Bob] Yeah. Easily.
If you go online, you can get 'em.
The lowest I saw was 40.
The highest we saw was 80.
Okay.
So how are you gonna make one of these?
Now, if you look at this one,
it has a flat spot on the sphere of the ball on the bottom.
I personally don't like that.
I like the ones, and I use the ones, that do not have that.
And I'm gonna show you how to make one without that.
So it's basically a piece of round plywood
and you need to have something sphere shaped,
hemisphere, on the bottom.
- [Bob] Yep. Sounds good.
- So let's go over to here.
This is what we do.
You go to,
well, we're gonna do the advertisement
for Menards.
I went to Menards and I got a Mastercraft Edge Glued...
What do they call that? Whatever.
- [Bob] No, you could go to a Home Depot probably.
- Oh yeah. Any place like that.
- [Bob] Fleet Farm.
- Yeah. One of them big box stores.
And I picked up this, already precut.
This is how it came.
Guess how much that cost Bob?
- [Bob] I don't know.
- $3.99.
- [Bob] You gotta be kidding me. Wow.
- $3.99.
The hardest part about this whole project
is to get the half of a round sphere that looks like this.
So, if you go to Menards or Home Depot,
or some store like that, you'll find a top of a post.
- [Bob] Okay.
- A wooden post and it looks just like this.
This cost me $2.95.
- [Bob] All right.
- Now the whole key to this is to cut this in half.
If you're not skilled
if you don't have the proper tooling
go to a cabinet maker shop and say,
"Can you cut this right off for me?"
And see how much they charge for it.
- [Bob] Sure.
- Because if you put this in a chop saw
and try cutting it, it is gonna catch,
it's gonna throw, it's dangerous.
Do not do that.
It's not a good idea
unless you really know what you're doing.
If I was doing this, I would take this
and glue it to a 4x4.
Or this has a thing.
I'd screw it into a 4x4 and then I would cut it,
so it's safe.
- [Bob] Sure.
- What I happen to have at my house,
I just remodeled the staircase and it had a four foot post
and it had a round ball on the top.
And it was all one piece so it was easy to cut it.
My daughter held onto the four piece over there
and I chopped it off.
And this is nice. It's oak.
So once you get that past that point
and you have the half sphere.
I used a croquet ball last time.
- [Bob] Oh sure.
And I've seen people use a softball.
- If you can cut it in half.
I don't know how you're gonna do that,
but any way you can get something like that.
That's the key part.
Now, what you do is you find the center of your board here.
This is a 12 inch one.
So I went six inches in. Six inches this way.
I found the center.
I pilot drilled a hole in there.
I put a pilot hole in there.
I went and got a little screw that was long enough
to go through the board and into here.
And then again, if you're handy
you don't need all these instructions.
If you're not handy, do not do it.
Put the screw in there.
Whoa. Okay.
Take some wood glue.
Some Elmer's wood glue, put some glue on there.
We got a pre-drilled,
get your Phillips screwdriver
or whatever the screw is designed for.
La da da...
- [Bob] So you can really make this very inexpensively.
- Yes.
- [Bob] If you can make that cut.
That's the key, isn't it?
- It is. It is.
You do not want to hurt yourself.
So don't do it unless you know what you're doing
or someone does it for you.
And look at this,
look at this.
- [Bob] That's nice. That's a high quality board.
- Yeah. Is that in focus?
I would definitely glue it.
If you do not glue it
I would put in at least three more screws in here
so that's secure.
But glue's by far the best.
You glue it and it's gonna be good.
Use some good wood glue.
Don't buy that cheap stuff
or some sticky stuff for that hot glue.
- [Bob] Would you put shelf liner on here too or not?
- That's a good point.
Now, I wouldn't use shelf liner.
I would use the Stickum stuff that goes on a floor
or steps.
Stairway edge.
- [Bob] Oh, strips.
- Yeah. They're strips. They look like sandpaper.
They got glue on the back.
You can get that for about $3.
And I put a few strips of that on there.
And here we go.
Why me? Bob get on there.
How much do you weigh Bob?
- [Bob] I Weigh 215.
- 215.
- This is just like the other one.
- Yeah.
Now, modifications.
This is actually a pine board
and I think it's gonna be strong enough.
- Oh yeah.
- Now, the other ones I made,
you could take a piece of plywood,
which is stronger than this pine.
You're gonna have to cut it out.
If you have a saw, you can cut a circle out.
It takes a little more work
- How much did you buy that one for?
- This was...
got the price here, $3.99
- For $3.99. I'm gonna buy that.
I'm not gonna cut out a piece of plywood.
- Some people would rather have plywood, Bob.
- Oh really?
- Oh, well, it's a little bit stronger.
- Look how thick this is. That's never gonna break.
Well, it is pine though, but that's another story.
If you got a craftsman out there, carpenter,
they might poo poo pine.
- Right.
- But oak. If you got some oak
then you could really get carried away.
You wanna make a gift, make an oak one.
- Sure.
- You could put some varnish on it.
Three coats of varnish make it look pretty.
- Sure. You can put the strips on.
- Yeah. And you could give it away as a gift
to your therapist, niece or...
- Oh, this is really a nice board.
- Yeah.
- We're gonna have you make all of our wooden devices.
- I guess my nights are filled up, huh?
- So thanks a lot.