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三次元CADを使い始める

https://blog.with2.net/link/?1965529

三次元CADを使い始める

https://blog.with2.net/link/?1965529

現役技術者のころには無縁だったCADそれも二次元を飛び越えて三次元CADを使い始めました。

半世紀前に新入社員として配属された設計部で、自分用のドラフターを目の前にしてなんとも嬉しかったことを思い出します。会社に行くのが楽しかった時代です。あれから何年かして自分で図面を描くこともしなくなり、若手達もPCで図面を描くようになり職場からはドラフターの姿は段々と消えていくようになりました。

自身も設計業務からも離れてCADのことは忘れていました。

ところがモノ作りを始めると細かな箇所の確認に手書きの図面では心もとなくどうしてもCADそれも三次元CADが必要になってきました。特に電子工作では初めに基板上の各部品の配置とか機体をくみ上げた時の干渉具合などを事前に確認しておくことが後になっての手直しを減らすためにも重要になってきました。

三次元CADと言っても趣味の世界で高価な有料ソフトを購入することは出来ないので、無料ソフトはあるのかなと検索してみると驚きです。いくつもあります。

こちらのサイトに色々紹介されています。

https://fusion360.3dworks.co.jp/2017/03/06/free/

それではとお試し版を片っ端からダウンロードしてきて使ってみました。

好みの問題ですが筆者にはDesignSpark Mechanicalが一番使いやすいように感じました。直感的に使うことが出来ます。

元来が電子設計用のDesignSpark Electricalが出発点なので電子部品のライブラリーが豊富なので電子工作主体のモノ作りには使いやすいと思います。機械工作のための部品図もこのソフトである程度は出図することも出来ます。基本は手加工なのでこの程度の図面で十分です。筆者の技量では図面の精度より手加工の精度のほうがはるかに劣っています。

今では工作よりはこのソフトを使って構想図を描いているほうが楽しい時もあります。

手放せないツールになりました。

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