Case parts making Pt.5

Forming six screw holes on the main case with M1.4 point tap. After making prepared hole, I turned the tap slowly by hand to form a screw thread.

After a few hours, six threads to fix the caseback were finished.

Case parts making Pt.4

Today I finished the caseback. Its total thickness is 2.20mm.
Φ34.30mm ,0.8mm thick flat sapphire crystal will be fitted.
At first I cut the beveled step of circumference on the lathe.

On the milling machine, I opened 6 holes for M1.4 micro screws. And Φ2.0 countersink for screw head. The angles between the holes are 36 and 72 degrees.
Because there is just a step, I had to cut slowly.

.
The caseback was completed well.

Redo the making lugs

復活。安心してください、生きてますよ。

昨年末から正月いっぱいは人様のプロジェクトの手伝いに忙殺される。写真を載せられないのが残念ですが、ケースのデザインと試作の依頼を受けました。

やっと自分の作品作りに戻れたわけですが年末に製作したラグのうち２個の穴あけ位置が少しズレていることが判明。作り直しです…。

諸々の下ごしらえが済んでアングルバイスに咥えいつものようにエンドミルで切削…と思ったが、そういえば何年か前に超硬のロータリーバー買ったなと思い出しダメもとで使用してみることに。
ちなみに某モ○○○ウＰＢの安物です。

結果、めっちゃ削れるやん！相手がステンレスなのでガッツリとは切り込めないがエンドミルより全然速い。こんなこと常識なのかもしれないけどなぜ今まで思いつかなかったのか…新年早々己のアホさを再認識したわけです。

単価もエンドミルよりは安そうだし、底面にも刃がついているタイプを使用すればもっと速くきれいに切削できるのか。試してみる価値は十分にありそう。

ケースの切削はもっとも時間とエネルギーを奪う作業なので少しでも楽に早く終らせたいものです。

Case parts making Pt.3

Last post in this year.
Now I am making the stainless lugs. I tried to cut them from stainless block. Angle vice came in useful.

I prepared simple jig to cut apart lugs from the block.

This process needed much time. I managed to finish it, however, this might not be a very good method.

Thank you for visiting this year.
Best wishes for the New Year!

見てくださった方ありがとうございました。
どうぞよいお年をお迎えください。

Case parts making Pt.2

My working is going well little by little.
Making female screws for fixing the lugs and through hole for stem.

Case parts Making

After I got a fix on making the jumping module, I started to cut and mill stainless case parts. I use carbide end-mill for bore cutting.

I process the other side of the main case with spread chuck.

After forming the step-bezel, make the space for crystal.

This is preparations to produce the lugs.

Dial making Pt.15 / Jumping Hour Module 7 (Completed) / Working Video

The finishing of the detail is still left, but the making of jumping-hour module has been brought to a completion.