How to Repair a Corner
Moon Patrol, Restorations, Tutorials April 21st, 2007Hey there. I’m going to make this post a tutorial.
In case you didn’t read the older posts in the Moon Patrol section, the Moon Patrol I’m restoring had water damage on the bottom of the cabinet. I cut away the damaged wood and added new pieces to replace it. The old wood looked like it was rounded off at the corners intentionally, so I rounded the new wood to match, and was pretty happy with the result.
A cruel individual who shall remain nameless (Wade Lanham)
decided to comment on those rounded corners and informed me that they weren’t originally rounded. At that point, I had 3 corners rounded off, and was going to get to the 4th soon. I was thinking of just leaving them as is, but it was bothering me. I’m spending so much time trying to make this right, that it would suck big time to have those corners rounded when it’s complete. I decided to fix them. This method would work regardless of whether you screwed up a corner on purpose like myself, or if you had one that was broken off.
Materials and tools you will need:
- Bondo

- Putty Knife

- Sanding block and paper (80, 120)

- Orbital sander (optional, but better than spinning your sanding block around real fast)

- Hammer

- Finish nails - 1″ or so is probably fine
- Light Block (for mounting lights on vinyl siding)

- Ruler

- Hacksaw

- Jigsaw (optional…watch your fingers!)

- Drill and bits

- Motivation






OK…here goes. The light block is in two pieces that snap together. Separate the pieces. You’ll need the piece that looks like this:
OK…take a beer break….ready?….let’s continue….
The side shown in the pic is the side that goes against the siding, and we are going to use it as a mold for the bondo. Bondo will stick to just about everything, except plastic. You basically need to cut this in half so you have 2 corners. The best way is probably corner to corner. I did it a little different but would probably do it diagonally if I had to do it again. I started cutting with a jigsaw which was fast. The only problem is it will heat up the plastic and melt it, and it quickly bonds back together. I then had to score it with a utility knife to get it separated. After I cut mine, the two pieces looked like the one on the left here:
Ignore that clamp…I didn’t end up needing it.
There is no easy way to explain this part…you need to measure and cut more of the plastic corner so it will fit underneath the corner, as shown in this pic:
Once you get this cut so it fits well, you’ll need to secure it. I did this by drilling a small pilot hole in a few spots, and banging in a finish nail just enough to hold the corner tight. You can see some of the nails better here:
Read the directions on the can of Bondo until you have them memorized. Mix the bondo on something flat that you can throw out later (like that girl you met at the sports bar last night?). When you have the bondo mixed, spread it into the mold like you are making a cake. Be sure to push down enough so that it forces the bondo down to the bottom of the mold, and leave the bondo higher than the repair so you can sand it later.
If you mixed the bondo right, it should harden in about 30 mins. If you crush a viagra and mix it in, it usually hardens a bit quicker. Feel the bondo to make sure it’s solid, pull the nails out and the mold should come right off.
Now, hit the side with the orbital sander using 80 grit paper until it’s smooth. For the edges, you can either use the sanding block, or the orbital sander. If you use the orbital sander you can easily make it crooked if you aren’t careful. Count the number of beers you have left, and make your decision. Here is the finished result on my Moon Patrol.








April 23rd, 2007 at 10:26 pm
thanks for putting this together.
April 24th, 2007 at 7:10 am
Hey Steve, you’re welcome! Thanks for commenting.
April 24th, 2007 at 4:27 pm
Nice tutorial. I like the use of the window box thing, I wouldn’t have thought of that.
April 24th, 2007 at 4:38 pm
Hey Mark…glad you like it.
I didn’t think of it at first…I walked the aisles of Home Depot looking for something that would work well. I would bet there is something even better suited for it but my feet were getting tired.
May 2nd, 2007 at 4:58 am
I lub yer tootorial!
August 3rd, 2007 at 3:26 pm
So did you gut a t-molding slot into the bondo? How did it hold up? I just picked up a hard drivin’ cockpit yesterday with some water damage on one side and will be using this tutorial to help me fix it.
August 3rd, 2007 at 6:12 pm
The corner is good so far…I didn’t put a slot for the t-molding. I actually don’t remember what I did. I think I may have cut the lip off the t-molding towards the bottom and put a little hot glue on it.
Congrats on the Hard Drivin’. That’s a pretty cool game from what I remember.