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Picture of Sliding Dog Gate Protects Door from Scratches
Anyone with a dog knows that if you let them out to do their business you better be waiting by the door when they want to come back in. If you're not, it's a sure bet that they will be scratching at the door trying to get your attention and, the bigger the dog, the greater the damage. This instructable is a classic example of my "closing the barn door after the horse got out" but, hopefully, it will save your door before it meets the same fate as mine.

Step 1: Low Tech, But Effective

Picture of Low Tech, But Effective
This is a very low tech project that is inexpensive and easy to make.

I built this dog gate from left over scrap lumber but all you really need are a few 2 x4's that you can rip on your table saw plus piece of 1/8" or 1/4" thick hardboard.

The size of the gate, both the width and height are variable depending on the size of your dog AND the size of your door. For that reason I am not recommending specific dimensions.

The next few steps will detail the basic design which you can follow or modify as needed.
 
Repairing wood is often challenging, especially if there is a thick urethane coating. Assuming you don't want to sand the whole door and re-varnish, you might be able to colour match by touching up with a carefully selected varnish. To remove dents and deep scratches there is a nice trick that works with wood, but only if moisture can get in so not through urethanes & varnishes. Take a dripping wet rag and place it over the dent, hold a soldering iron against the wet rag where the dent is. This forces steam into the wood making it swell. You can then sand it flat the next day and varnish it again. You probably want to practice on some scrap first and then test an inconspicuous part of the door to see how that wood responds.
natesgate2 years ago
Another way to protect your door that I've used in the past: attach a metal grate to the door. You can find decorative grates, or grates in different finishes/colors. The one I used was thin, approximately the thickness of a coin (the frame was thicker). This protects and moves with the door. When the dog scratches the grate, it makes a noise to let you know she wants in (mine learned to use noise this instead of barking).

Nothing wrong with your solution, this is just a different one.
ChrysN2 years ago
Nice idea. It is great that it slides so that it is easy to move to let the dog in.