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November 13, 2017


John Dunn

From the light bulb package and an internet website, I have the supplier as:

Foodhold U.S.A., LLC
8301 Professional Place
Landover, MD 20785-2237

I have composed letter to them about this matter and now let's see what their response will be.


In the first case it looks like a standard A19 incandescent bulb. In the second case it looks like an A19 halogen bulb. Most likely the "envelope" (actually just a decorative cover) wasn't glass but a polycarbonate or other type of plastic and it melted from the heat of the halogen bulb (the glass bit left behind) or one of its neighbours.

Regardless, both of these bulb types are obsolete and shouldn't be used anymore. A19 LED bulbs are now very cheap (you can get them for less than 0.50 per bulb) and have pretty much replaced incandescent, halogen and CFL bulbs. Using up your old bulbs is false economy as it doesn't take long for the electricity wasted to exceed the value of the bulb.

In terms of specialty bulbs, LEDs are still more expensive, but rapidly coming down in price. Because LEDs are so easy to make in volume, it won't be long before they are the cheapest type of bulb.

The only place you will still want to use incandescent bulbs for the foreseeable future is inside heating appliances (stoves, dryers, etc) as heat is the enemy of LEDs and the waste heat isn't really wasted, but those typically use an A15 Appliance bulb.

John Dunn

Roger, you seem to be quite correct about the composition of that bulb's envelope. I broke off a little bit of it with a long nose pliers and it most certainly is NOT glass. It is very brittle, but it doesn't sound anything like glass when tapped.

Brent Rupp

John, I realize this is an old post but I have recently gone back to read some of your old postings.

Have you noticed that the surface of the bulb bases and of the sockets themselves are much rougher these days than they were 40 years ago? The quality and strength of the bulb glass (or other material) are quite possibly an issue, but the friction seems much higher in removing bulbs these days. For this reason, I spray every bulb with WD-40 before screwing it into its base. I have found that this significantly reduces the problem that you have written about.

As bulbs burn out and I replace them with LED type, the expected life of the bulbs is much greater, so they may outlive the usefulness of WD-40, but only time will tell.

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