4/3(Sun) Prototype 2

Place: FabCafe Material
Took about 2 hours



Yesterday I made a big mistake using clay as a foundation, so today I tried DIY again with a cork board. As I thought it seems better than doing it at home, I did it at FabCafe MTRL that has variety of making tools.
Cork board is affordable material for cutting and making a hole. It was easy to deal it.

Reviews & Tasks
・安定感が大事
・土台と歯車＋軸の関係性がよく分かっていない。スムーズに回らせるにはどうしたらいいか？

・The important point is its stability.
・I have not understood the connection between foundation and gears, and gears and axes. I wonder how can I spin gears smoothly.

DIY process

コルクボードを木枠から切り抜く
Cut cork board from the wood frame.


土台に適当な大きさの板を作る。カッターでコルクを切る。
Cut cork board and make adequate-size plate with a cutter.


上の板：縦9×横10cm、下の板：奥行き9×横10cm
下の板は薄っぺらかったので、同じ大きさのを２枚重ねてボンドで貼り合わせた。
Top plate… Width:9cm Depth 10cm
Fountdation plate… Width 9cm Depth 10cm

Because the foundation plate was so thin, I glued a same-sized cork board to it.




Determine the position of the gears, and make holes with drill.
To drill the cork board was so easy because of its softness.
歯車の軸を通す位置を決め、キリで穴を開ける。コルクなので穴を開けるのは簡単だった。



コルクボードに歯車をとりつける。
Fix the gears (strictlly speaking, connected gear and axis) on the cork board.


上下の板をどうやって一致させるかを考えていなかった。
最初はコルクボードの端切れを使って支えにできるかと思ったが、元々の薄さがかなり薄いのであまり補強にならないと分かる。そこで、使うつもりのなかった余りの木枠をノコギリで小さく切って棒状にして、木工ボンドで下の板に貼り付けた。するとそれなりにうまくいった。
I had not considered how to fit the top board(?) and the foundation.
At first, I thought that the leftovers of cork board could be used for supporting, but it appeared that it was not helpful because the cork board was thin. Therefore, I cut the wooden frame -which I had not intended to use- into small sticks to support the foundation. Then, it worked reasonably well.

This picture shows I am completely DIY layperson!
どっからどう見ても素人の手つき。腰が引けている。



Combine all.





歯車の噛み合いも問題なし。
ただ、軸の部分がネジなので、回せば回すほどネジが締まっていき、歯車の位置が次第に変わってしまうという問題が発生した。最終的にハンドルが動かせなくなってしまう。
↓
ネジではなく、丸い棒を軸として使ったほうがよい？
　その場合、歯車はどうやって軸に固定させるのか？
There was no problem of mesh between these two gears.
However, since the shaft parts were screws, the problem occurred that the more it was turned, the tighter the screw became and the position of the gear gradually changed. Then, the handle became stuck eventually.
↓
Is it better to use round sticks as shafts?
In that case, how to fix a gear on certain position of a shaft?




木の支えがちょっと心もとなかったので、マスキングテープで補強。
Since I was worried about the bound between the wood sticks and the foundation, I reinforced it with masking tape.


かさ歯車も取り付けたかったけれど、薄いコルクにシャフトを取り付けるのが難しそうだったのと、かさ歯車とシャフトのの隙間を埋める方法をまだ思いつかなかったので、この日はここまででギブアップ。ただし前回よりは形になったと思う。
I wanted to add a vebel-gear to this, since it seemed difficult to attach the shaft to the thin cork and I had not yet figured out how to fill the gap between the bevel gear and the shaft, I gave up at this point for the day.
But I think it was better than the last prototype!