The New Computer Desk

This project went a little faster than expected.  I was working more from home and needed something in a quieter place than the family room.  A desk was planned for our room, it just moved up in priority.  It is a very similar design to the nightstands and constructed in the same manor.  I wish that I could say that it was easier since I had made the nightstands but there were still some major mistakes made in the building of the project.

The design is pretty simple.  I wanted a simple, straight forward desk that would not hold a lot of stuff.  It was supposed to hold a printer, but I think that changed.  It can but it makes it a very tight fit.  It was going to have a single drawer to hold pencils and a note pad.  We found out after that will also hold a wireless keyboard.

The main difficulty was the size of the top.  There is an undercut bevel that would not fit on table saw.  I had to cut it with a circular saw.  It did take a lot of cleanup afterwards.  The jointing of the three pieces also proved to be a challenge that I was not ready for.  I did it by hand first because my planer could not edge plane the pieces. I ended up cupping the boards.  I ended up running the smaller piece through the planer to edge joint the piece.  That gave me a reference surface to match the other two pieces.  It was a pain, but the glue joints came out great.

The other issue I had was a complete mistake that I should have known better.  I was moving the base and the top clamp came off.  I was using 5-minute epoxy and it had been clamped for 30 minutes.  I did not put the clamp on because I figured it was cured enough.  The back to joint separated just enough to make me annoyed.  I did not fix it because the back is going to be up against the wall.

I like how the desk turned out and it works well.  I also got the dove tails fight this time

Catapults

I think I cope with stress by designing and building weaponized toys.  The ping pong ball guns and now the catapult.  I can remember the stress I was under when I made the trebuchet and the rubber band Gatling gun. The intent of the catapult design was for science.  The design was to allow to figure out the best angle of trajectory, where the rubber band should be placed, and the length of arm.  

I probably oversized the catapult.  The length of the catapult is 24” and the plans need to be printed on 11x17 paper.  I don’t regret the size; it works well.  I might come back and make a desk top version.

The saw tooth design is so the dowels can be moved to change the angle of trajectory, where the rubber band is placed.  It also allows for the arm to easily be replaced.  Over the process of making it, I realized the location of the rubber band was not important but how many rubber bands. 

My kids assembled most of the catapults.  The oldest choose not to participate.  The younger two glued and screwed most of the pieces and cut the dowels to length.  They installed the hooks and placed the location of the dowel stops.  I actually think that I was able to teach the middle child some tricks. 

Here are the mechanical advantage lessons that I think I taught him.  If he remembers them that is a different story. 

• Wedges to split glued parts that are not supposed to be glued.  We used a chisel to separate a clamping joint that got stuck together with squeeze out
• Lever arms, we used a screwdriver to put in the multiple hooks required for the project
• Blade pinch, he learned what happens as you pinch a blade when trying to cut material. 
• What happens when… The catapult has several different options that can change trajectory and tension.  He was able to figure out that different angles caused the marshmallow to fly differently.  He was also excited when I added a second rubber band and told him I doubled his power. 

Overall, the project went well.  They are a little bigger than I thought they would be. They launch marshmallows and ping pong balls about 40 feet.  The kids had fun.