What's your biggest foul up?

Colin wrote:

I once decided to try to cut out the parts from my F4U-ID CORSAIR using a Minicraft drill with a cutting disc attached. BIG MISTAKE... The disc slipped and cut a groove through both the wings,this caused many hours of filling and sanding. I can laugh now but the air was turned blue at the time. So what's your biggest foul up?

I once tried to dril the hole for the prop with a dremel, I slipped and made a nasty schratch on a already painted p-38.

But my biggest foul up was using Tamiya Flat Base. I sprayed it on and my whole model became frosted... I later found out that you have to mix it with gloss coat. But the guy at the LHS didn't tell me that when I asked him "Wil this dry clear?"

i glued individualtrack links together in one long strip . did not realize till after  i can't bend it around the tank's wheels.

that was before  i became THE GREATEST MODELER

I'm not daring enough to do anything dramatically horrible. Let's see, I had to pry apart a 1/144 B-29 once I realized the stabilizers had to be inserted before glueing the fuselage halves.
And then there was the time I sanded off detail on an F4U Corsair's stabilizers that appeared to be ejector pin marks. Then I looked more closely at my copy of Detail & Scale and discovered those circles are part of the plane. Oops.
Fortunately, both my foul-ups were on inexpensive kits.

mine was cutting out the bridge windows on the Tamiya 1/350 New Jersey Battleship! Had the PhotoEtch but cut them out waaaaaaay to big, had to do tons of modifying, plus not having the right stuff to make the glass look etc.. you get the picture...

My worst moment to date in the hobby has involved a 1/72 CP-140 Aurora (Canadianized P-3C Orion) that I built when I was about 17.

It was obvious that some nose weight would be needed to get it to sit right on its nose gear. I kept trying to balance it out over and over again. It needed a lot of weight up front, unfortunately, over time I realized I had overdone it and the nose gear, and eventually the main gear started to give out under the weight.

I'm going to pull it apart and get some of the weight out of there, but I have to get together enough aftermarket decals to restore it before I try that sort of thing.

Sad, she was the pride of my collection when I built her :-(

My worst moment came when I found out the hard way about overcoat compatibility. I had just finished an MPM FM-2 Wildcat with Gunze Sangyo paint, it was looking good, and I decided to gloss coat it with Badger Modelflex clear gloss, which crazed the paint, making it look like the bottom of a dry lake.