One who often works with paper and ink, it is recommended to do simple drawing tool simplifies many design works. In principle, it is a cross between a poster with pen and brush. To make it, you need to whittle out wooden planks a simple holder, made of tin to cut two plates and to procure a few foam strips. How is going to “pen” it is clear from the figure.
Recommend to read
- A SMALL STEP FOR SMALL STEP…
Nearly five years, the ousting of John Holland, a private company in 1904 came to a natural end. Amateur inventor had left the firm and his place was taken by young and energetic... - AND RUMOR MACHINE…
Following the requirements of engineering designers more and more to "humanize" modern technology. In particular, be equipped with machine devices to provide voice prompt about the...