Beautiful dovetails! On Friday, December 26, 2014 6:05:02 AM UTC-8, Nick wrote: > > Small present I made for SWMBO using reclaimed items - a neon letter from > the front of a theatre (about 6" tall), some offcuts of an oak floor we had > laid 9 years ago, bits and pieces from the workshop... some specialised > neon bits - the silicone covers for the electrodes and the special latex > "blocking paint" to conceal the electrodes themselves, all bolts are M4 > hex-headed to prevent curious children opening it (2000V inside) - bolts > mate with M4 brass inserts or nylon lock nuts - cable clamp was stolen > from an old light fitting. Oak was thicknessed down from 20mm to to 14mm > and the joints cut, backing timber was 4mm thick so 4.8mm x 5mm deep groove > set round inside of box (176mm x 210mm internal), Forstner bits used to cut > 20mm holes for tube electrodes, lots of use of router table, table saw, > planer-thicknesser etc. > > Mounting/back panel for the neon was very rare timber sourced from Timberline > in Tonbridge in the UK <http://www.exotichardwoods.co.uk/> - lovely bit > of wood - they sell 100s of different rare (legal) woods for turning, > musical instrument manufacture & repair etc. Amazing place. Absolutely > amazing... > > Finished on Xmas Eve... still to do: small uP to PWM-modulate the HV to > dim the tube a bit - bearing in mind it was originally an outdoor display > sign designed to be read from 50ft away, its a tad bright for the kitchen, > so I wil change the standard electronic transformer I'm currently (!) using > for a PWM version when it arrives from the USA - a small uP, or even just a > PWM 555-based design, will control brightness nicely. > > Luckily, SWMBO likes neon and absolutely loved the sign... many thanks (as > always) to John Smout who gave me the idea for "a letter in a box"... >
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