Nadia, age 11 of Pontiac, MI wrote:
it slipped straight open

Usman, age 10 of Cambridge, ON wrote:
Frist I tied one end of the string to the door knob. Then on the wall I put a paper towel roll to act as a pulley. When I tried the door opener the paper towel roll went flying like an airplane that's out of control. Even if it did not work I had lots of fun trying to make a door opener.

Daisy, age 10 of TX wrote:
o used a mashin and my door opened by its self

Verquell, age 10 of Milwaukee, WI wrote:
Me and my sister keep doing it over and over and over agine it was cooooool.

Damaris, age 8 of Lynn, MA wrote:
When I did it really opened.

Alex, age 10 of Brampton, ON wrote:
I had a string tied and then wrapped around the knob. when I pulled the string the knob twisted and the door opened!

Brian & Preston of ID wrote:
Since My bed and my brothers bed are not directly in front of our door, I used a spool to redirect the direction of the string like so.

Mark, age 10 of Tonopah, AZ wrote:
I tied it around the door knob and taped the end so it wont come off then I put tape around a spool of thread and around to the back thenput the string through the spool. Next just do the same thing below to keep the top spool in place then just pull and it open'd.

Hannah, age 6 of Columbus, OH wrote:
I made a contraption with string to open the cabinet door. I put a rubberband around the door knob and taped the rubberband to the string and opened the cabinet by pulling the string.

Sara, age 8 of Ajax, ON wrote:
The firs time I tried it it didn't work because insted of using duct tape I had to use masking tape. And another posibility could be that my bed is infront of the door. I was going to use duct tape but I couldn't find it so I willtry agian onse I find the tape.

Corin, age 11 of Austin, TX wrote:
Remember when you did the door opener? Well instead I used string and tied it outside the door and it worked!

Irene, age 8 of Baton Rouge, LA wrote:
I used green tape, clear tape and rubber bands. I pulled the rope and it opened

Lindsey, Allison, Lauren of LA wrote:
I did this with my friends, Allison and Lauren. It worked!! We also figured out how to turn off and on your lightswitch without getting out of bed!!

Tyesha, age 12 of Toccoa, GA wrote:
The first time I did It the tape broked because, when I put the string on my door handle I did not wrap it. So the second time I did it, I taped it on the end and then wraped it and taped it again and it worked.

Jaskeline, age 8 of Chula Vista, CA wrote:
It woorked it out and now when ever Im sleeping and mi mom knoks I could just open it without standing up.

Olivia, age 12 of San Francisco, CA wrote:
I tried using a coat hanger and taped it to the door. Then I attached two strings to the hanger. Then I sat on the bed and tried it. It worked.

Emily, age 11 of Fergus Falls, MN wrote:
My little brother always trys to make "traps" but usually they don't work. When I saw on TV that you made a contraption that would open and close doors by just pulling a string I just had to try it. All I used was tape, rubber bands and string and it works! My brother went crazy when all he had to do is pull a string and the door would all by itself open and close!

Kelly, age 14 of Pickering wrote:
I tried using paperclips. First I put them all together. Then I tied a string on the end and taped it to the door. Then I tied another string and taped it on my bed. Guess what... It worked.

Deblina, age 9 of Monmouth Jct, NJ wrote:
I did it with two pieces of string. I used 1 string for twisting and 1 for pulling. It worked very good!

Ian, age 8 of Sunnyvale, CA wrote:
I used a lot of tape on this project for the first try, but it diddn't work. On the last try,(I made it that time) I used my bed as a structure becauseit was a bunkbed. I also used a type of string that was really strong. P. S. I loved it!

Bibek, age 8 of Sunnyvale, CA wrote:
Well, my bed is next to my wall, so my door is right in front of my bed. I only used duct tape and yarn and it worked! I tied the string to my door knob and then I taped the other end next to my bed and when I need to pull I just lift the yarn and pull as far as possible then swung the yarn back and forth to open and close my door!

Ciana, age 12 of Eugene, OR wrote:
I tryed closing my door instead of opening and it worked. I tied a thread roll on the back of the door, (I used string). I taped hangers to the door and ran the string threw them and pulled the string to my bed. With the sring roll I measured how much I would need to open the door and then put the string in the slit (on the string roll ).

Rachel, age 11 of Cumming, GA wrote:
When I tried it the first time it worked great! All I used was rope and tape.

Erin, age 13 of North Andover, MA wrote:
I saw this experiment while flipping through the channels. I like science so I tried it. I used two spools, a hanger, for support, and some rope. It worked really well and now I don't have to bother opening the door, I can just pull a string.

Nishiki, age 9 of Austin, TX wrote:
What I did was I took 2 jump ropes and tied them on a knob. Then I put one rope out side and one inside. I sat on my bed and pulled the rope. It opened! This happens because when I put the rope out side it did not close all the way.

Andrina, age 9 of MB wrote:
All I used was a skiping rope and sat down on my bed and pulled the skiping rope and my door opened and closed it for 2 hours and it was very cool!

Becca, age 10 of Notus, ID wrote:
It worked when I tried it. But I'm wondering if you can fin a way to shut the door with a string, stick, and rubber bands. Good luck.

Carolina of West Valley City, UT wrote:
I did it by tieng a piece of rope to the door nob, then I tied the other end 2 a clothes hanger (plastic) and that is haw I did it. It worked perfectly.

Ilhaam, age 11 of Edmonton, AB wrote:
I did a light switch and a door opener so now when Im in bed and dont't want to get up, all I have to do is tug the rope and the door will open. All I have to do with the light is pull a different rope up and down.