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Showing posts with label fasteners. Show all posts
Showing posts with label fasteners. Show all posts

Tuesday, December 24, 2013

Renaissance of the DIY Electronics Store.

Most who are old enough remember when Radio Shack
had walls of electronics and hardware components for DIY

The dawn of the Twenty First Century seemed to bode poorly for such retail. Catalog companies like Jameco and MPJA, and even the majors like Digikey and Mouser  became the source of choice for DIY.

Online sales outlets then saw growth. Some above morphed to online. And many project oriented experimenters (“hackers”, “makers” – what have you) moved to coordination with such online entities.

And there are closely allied entities (physical or conceptual DIY)

And one can get practically anything from Amazon.

And well executed online hardware thrives in forms like McMaster-Carr   http://en.wikipedia.org/wiki/McMaster-Carr

But the retail store is not dead... Sometimes as a hybrid works - like fasteners from Fastenal   http://en.wikipedia.org/wiki/Fastenal
And Home Depot and Walmart are developing online presence to leverage their retail…

But getting back to the point. DIY modules are now back on the walls at Radio Shack. And they are popping up else where. There is a whole section at Microcenter in Cambridge for such. http://en.wikipedia.org/wiki/Micro_Center

CompUSA and Fry’s are similar (and there are some locals still holding on like You-Do-It in Waltham).

Might not be long before craft supply and home improvement get on the band wagon? And there are always players like Walmart which might take up the banner. One wonders if such a game change could save Kmart/Sears?

Sunday, January 6, 2013

Advanced Thermal Insulation

Aerogel and VIP.
http://en.wikipedia.org/wiki/Nanogel_(insulation)
http://en.wikipedia.org/wiki/Vacuum_insulated_panel
VIPs often seen in award winning green designs.

Would like to get a cubic metre of each of these
  • Lumira loose, for attic, sill and crawl spaces
  • VIP blocks about 30 x 30 x 2 cm, for general surfaces
  • Spaceloft blankets about 1cm thick, for insulating behind radiators, around the fridge, freezer and hotwater heater
Insulation for any places highlighted by a survey with a thermographic camera...
Thermal cameras have come down in price and moved to retail themselves – note the FLIR/Extech i7.
Puzzle: Why not more plain foam (fire risk) between cement (CaO quicklime or MgO magnesia) fireproof panels? There seems to be an emerging supply of thin robust cement boards. But cannot find at local retail board at under 4mm thick (light enough to be manageable).
And it freezes the heart to think of using nails and screws with any advanced insulation system. Plastic/ceramic fasteners are not common place in North America.
Searching “fixings” here generally gets condiments for a burger or hotdog. Insulation fasteners searches do not uncover much.