Good morning, While browsing the current issues of Model Engineer at my local library I found the following article:
Michael Lee (2014) A world sun clock. Model Engineer Vol 212, No. 4480, 18 April 2014, pp. 574-578. VERY nice article about a SUPERB dial made to Alan Herbert's original design, and how Michael made it. I especially liked the fine detail achieved by etching the lettering and lines. Hand engraving has always scared me (way too skilled for my shaky hands!), so Michael's etching is a real inspiration. *********** In the same browsing session (the old fashioned kind of browsing: turning the paper pages of a real analogue magazine!), I came across a very nice detailed article on etching using photo-resists and ferric chloride. The instructions in the article may be of interest to list members: Neil Wyatt 2014 A step-by-step guide to photo etching. Model Engineer, 7 March 2014, pp. 380-384. Regards from a sunny but wintery cold Sydney, John Dr John Pickard --------------------------------------------------- https://lists.uni-koeln.de/mailman/listinfo/sundial
