The illusive Boxford 260vmc

[irving2008]

OK, you might find that device a tad slow. You could try 75R instead of 330R and 1k5 instead of 4k7. Otherwise you may find counting is erratic. Alternatively the circuit attached should help...

[Ricardoco]

OK, you might find that device a tad slow. You could try 75R instead of 330R and 1k5 instead of 4k7. Otherwise you may find counting is erratic. Alternatively the circuit attached should help...

Im happy to get what ever device you suggest if you think that one is going to be a tad slow, im just not sure which one to go for, just let me know and ill get it..

[Ricardoco]

Im designing the front control panel and was going to use Acrylic, I decided that the black stuff that when engraved shows through white like office signs would be the way to go, does anyone know what it is called because I cant seem to find any on fleabay but it maybe because im not using the correct terminology... Any takers??


Rick

[GeorgeD]

Plenty of Tachometer schematics here.

http://www.google.co.uk/images?clien...og&sa=N&tab=wi

[ecat]

Acrylic

Try perspex or lucite or ... http://en.wikipedia.org/wiki/Acrylic_glass

Popular for computer case mods: http://www.chilledpc.co.uk/shop/inde...0c1372822fcb30
also amongst model makers: http://www.modelshop.co.uk/category/...lphabeticalAsc
and not too expensive :)

[GeorgeD]

Don'tknow about your query for the acrylic Rick,but I found trent plastics very cheap on ebay....
http://cgi.ebay.co.uk/ws/eBayISAPI.d...EOIBSA:GB:1123

[Ricardoco]

Oh sorry people, bad description by me, I wasnt having probles finding acrylic/perspex, I was having trouble finding the dual colour stuff that engravers use to make door signs and stuff, its usually black but when you engrave through it, a lighter colour, usually white is revealed to show the lettering, sorry.

If i cant get it i can see i will have to do the engraving, then get out the enamel paint and fill the grooves with white. (yuk.... not my fav idea but needs must)

Rick

[GeorgeD]

Couldn't you buy clear acylic and a sheet of black stickyback film,cutout the legend on the film then stick down over the clear acylic.?

[Ricardoco]

Couldn't you buy clear acylic and a sheet of black stickyback film,cutout the legend on the film then stick down over the clear acylic.?

The short answer is yes, and its something i did consider but Ive done something similar in the past and it did look good....for a while but by the time the swarf on my fingers and oil and greese took its tole it was peeling and didnt look so good, but thanks for the suggestion as i may have to find a more DIY approach in the end.....Ahhhhh decisions, decisions, why is it so complicated to do even the simplist things.....:cry:

[John S]

Problem is that it has so many trade names, or even none.
ABET is one , Traffolite is another.
and these people have no name for it

http://www.bayplastics.co.uk/engravinglaminates.htm