shenders
Member
How big is this garage?
shenders said:How big is this garage?


Craig Balzer said:IntrstlarOvrdrve
Your comment about the bulb/light appearing yellow has nothing to do with the wattage of the various bulbs. The criterion that determines how the human eye registers the color of the light has everything to do with the light source’s Color Temperature.
Not all fluorescent tubes are created equally. Some have a pleasing color, others look hideously greenish. There are two numbers important to the color: the color temperature and the color rendering index (CRI). A color temperature around 2800K will give a color that has the warm, reddish hue of an incandescent bulb. A 4100K is cool white. Look for a CRI of at least 80, or expect some colors in the room to not look right – like maybe a bit yellowish.
A lamp marked F40T12CW is a Fluorescent, 40 watt, Tubular shaped bulb, 1½ inch diameter (the T number is in 1/8 inch increments so 12 = 12/8 or 1.5 inches) Cool White lamp. Other color designations are used such as Lite White, Deluxe Cool White, White, Soft White, Natural, Plant Lite, Plant & Aquarium, and so on.
Lamps utilizing rare earth phosphors have additional markings denoting color rendition index (CRI) and color temperature markings (chromaticity). Hence, a lamp marking of RE 835 would translate as follows: RE=Rare Earth, 8=80 to 89 % CRI and 35=3500K Chromaticity (color temperature). Color Rendition Index (CRI) is marked as 7, 8 or 9. Seven is from 70 to 79 % (good); 8 is from 80 to 89% (excellent); and, 9 is from 90 % or higher (superior).
And that is probably a WHOLE lot more about light bulbs than you ever caresd to know.
Craig (with lots of time on his hands)
Craig Balzer said:IntrstlarOvrdrve
Your comment about the bulb/light appearing yellow has nothing to do with the wattage of the various bulbs. The criterion that determines how the human eye registers the color of the light has everything to do with the light source’s Color Temperature.
Not all fluorescent tubes are created equally. Some have a pleasing color, others look hideously greenish. There are two numbers important to the color: the color temperature and the color rendering index (CRI). A color temperature around 2800K will give a color that has the warm, reddish hue of an incandescent bulb. A 4100K is cool white. Look for a CRI of at least 80, or expect some colors in the room to not look right – like maybe a bit yellowish.
A lamp marked F40T12CW is a Fluorescent, 40 watt, Tubular shaped bulb, 1½ inch diameter (the T number is in 1/8 inch increments so 12 = 12/8 or 1.5 inches) Cool White lamp. Other color designations are used such as Lite White, Deluxe Cool White, White, Soft White, Natural, Plant Lite, Plant & Aquarium, and so on.
Lamps utilizing rare earth phosphors have additional markings denoting color rendition index (CRI) and color temperature markings (chromaticity). Hence, a lamp marking of RE 835 would translate as follows: RE=Rare Earth, 8=80 to 89 % CRI and 35=3500K Chromaticity (color temperature). Color Rendition Index (CRI) is marked as 7, 8 or 9. Seven is from 70 to 79 % (good); 8 is from 80 to 89% (excellent); and, 9 is from 90 % or higher (superior).
And that is probably a WHOLE lot more about light bulbs than you ever caresd to know.
Craig (with lots of time on his hands)

IntrstlarOvrdrve said:Ok, over the past two days we got the walls painted a darker grey, and put our HID's up. This is what a lot of money in lighting looks like.
DynoDave said:One word of caution...be VERY careful how much weight you put on the white wire shelves.
PAToyota said:How is the crane fastened to the floor? I'm sure you have taken precautions, but even a couple hundred pounds could be an issue with just wood subfloor and joists...
BoCRon said:Is this a light box that you built, or is this something you can buy? Most of my ceiling space in my garage will have hyloft or hoist storage racks, so the only way I can add lighting would be down the center beam, or in the way you've done here. If this is a light one can buy, what is it called?
Love your shop!
Annette
![]()

