Quality of Light in the Shop

Daniel Koster

www.kosterknives.com
Knifemaker / Craftsman / Service Provider
Joined
Oct 18, 2001
Messages
20,978
Just thought I'd share a little Shop Tip.


I've never been in a workshop that had "too much" lighting. ;)


But you don't solve your lighting problems by going out and just buying more fixtures. There is such a thing as "good lighting" and "bad lighting". Not all light is the same quality.


My advice? Avoid "down lights" anywhere except where you need detail work.


Full-time knifemakers or those with a dedicated shop probably don't have to worry about lighting - may have already solved their lighting needs.

This is directed more toward the part-time maker who might be sharing his space with other functions....or just have crappy lighting in the first place. :p


Have a look:


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The first pic has the lights pointed down; the second pic has the lights pointed up.

It may seem at first that the first setup "has more light". But look at the strong shadows on the equipment (most notably on the KMG, motor and drive). This contrast between dark shadows and bright "hot spots" will make your eyes strain and tire quickly...causing more "oopsies"....:eek:


For those who have read Coop's "Light Box" thread...you may already understand the importance of indirect, filtered, reflected light (the same idea applies to lighting your workspace).

For anyone else - in a nutshell....you don't want to point the light right at your work (unless doing close-up, detail work in a controlled area). You want to "flood the room" with light from multiple sources. Let the light bounce off the wall and ceilings. Unless they're painted black :footinmou, you'll get a good reflection that will "wash" your work area with light. That's how the Sun does it, my friends. ;)

So, instead of pointing shop lights down at your work - point them up, and light the ceiling/wall instead. The hot spot will be over your head and your eyes will be less strained.

I think we'd all be surprised how little extra lighting costs...and how much a difference it makes in the shop. Especially the part-timers....those lamps cost $7 at the hardware store - and I get a $3 compact flourescent 13 Watt bulb for them. I have a dozen of these...just love 'em. Even with all of them running, I'm still only using 156 Watts (12x13W) - the same as two 75W bulbs. But I get 10 times the amount of light.

Add another $1 cost per light and you can get "daylight" bulbs that will last just as long, use the same low-wattage, and give you a nicer light (less yellow).




p.s. I'm sure I've left some explanation out - so feel free to ask questions. I deal with lighting issues in my "day job" on a regular basis - and probably take certain things for granted...
 
comments anybody?


What other lighting tricks do you guys know of? I'm still learning too.
 
Good tip. I'm finally getting some decent light in my shop. I've got a couple halogen work lights, and I keep them pointed up a little bit like that. Its best when its nice outside and I can just run the garage door up though.
 
Matt Shade said:
Good tip. I'm finally getting some decent light in my shop. I've got a couple halogen work lights, and I keep them pointed up a little bit like that. Its best when its nice outside and I can just run the garage door up though.
Hey, Shade! What the HELL do you know about lighting?!

Get it?..Shade....light? Shades stop the light...get it?:D

(I crack myself up sometimes):D

Michael
 
We started out pretty primitive with candles...but the grinder kept blowing them out....so we moved to coleman lanterns...but I spilled some fuel and near burned down the shop...we even tried them KMart tiki torches...great for keeping the bugs out of the shop...no too good for light...I tried an electric "drop light" but couldn't figre out how to hold it with one hand and grind with the other...so I finally found a good solution...

You can get some real good direct lighting by holding a three cell mag light under your armpit...I tried taping it to the rafters but did not get the same dramatic affect!

Although them angle head GI type flashlights might work? hmm...with then right amount of duck tape? would the red filter help? hmm...

I can see a new thread entitled..."Flashlight Wars!"

Sorry Dan...couldn't resist some chain yankin!

Shane
 
Got 'em at Lowes - can't remember the brand, but they were $2.97 each.




Hey...I can see your eyes through your glasses, Mark. :p
 
I have a bunch of random high wattage lights thrown over rafters, screws and nails. I want to go out and replace the 3 florescent light fixtures that haven't worked in 4 years anyway.

How about some feedback on Florescents. My shop is in the barn so I heard I'd hafta find some "cold weather" florescents? Any words of advice on make model, costs and where to get em would be great.

I am getting sick of plugging and unplugging all those lights each night I go in.

Thanks,

PJG
 
Daniel,

This is actually very timely for me. I'm about to rearrange my shop (garage) and move my grinder to the opposite corner. If I hadn't read your post I would have gone out and bought two more big flourescent fixtures and hung them from the ceiling. Now I know better. :D

This also answers my question of "how do I set up my lighting so that it works with the garage door open AND closed? The answer is just get a few of those small lights and point them up. Then the light can reflect off of whatever is up there. :)

- Mike
 
C :cool: :cool: L


can't tell from the pics...but those lights are actually hanging from my garage door track. There's about 2 feet of space at the end of the track that the door never touches. Like you said, works whether the door is open or not.
 
Well, you couldn't tell in my shop pics in the blade making articles, because I had many of the lights turned off while shooting pics... but I'm kind of a lighting nut.

Flourescents are a GREAT way to light your shop, but there's a couple things to keep in mind.

The traditional flourescent shop fixture will burn a T12 bulb and runs with a magnetic ballast.

There are now fixtures available that burn T8 bulbs, and run with an electronic ballast.

Is there a difference?

YES!!!

The T8 bulbs are smaller in diameter (1" vs. 1.5 for a T12) but they burn brighter. The electronic ballast means that when you flip the switch, the light comes ON... none of the traditional flickering/buzzing/strobe light effect that many people think of with flourescents.

I went and bought about a ten T8 fixtures and added them to my shop.

Another thing to keep in mind is bulbs.

Cool White is acceptable and will light the shop nicely. BUT, you can spend a few more dollars a bulb, and buy the DayLight bulbs.

The daylight bulbs are brighter, and produce a light that's much more like being outside.

Are they really expensive?

NO!!!


You can go to Home Depot and buy the T8 fixtures for $8 each.

The Daylight bulbs can be purchased in a two pack for $5-6/pack, or in a case.

Then for specific jobs, task lighting is great... i.e. desk lambs and such.

You can't fix problems in your knives if you can't see them!!! :D

-Nick-
 
Dan and Nick, Thanks for the tips. After spending alot of time yesterday morning making a gaurd, it came out a smidge to big :eek: . I then took stock and realized that I need a lot more lighting in my basement shop. I am missing little tiny details on my projects that I dont see downstairs , but show up real good outside in the sun. ( could probably use glasses too :rolleyes: )
Rick
 
im a forger, so i rarely have to change light bulbs! :) i usually keep my shop completely dark using the light from the forge.
but when im drafting new designs or inspecting a blade, i use those stick anywhere touch lights. i have like 4 all around my workbench. there great, because i can control the level of light, there also cheap and can be put anywhere. i also have a strong desk lamp on my work bench for detail inspections, it has a mag. glass on it too, which is cool. thanks for the ideas!
 
A tell tale sign of poor lighting in your shop, is when you attend a knife show and you look at your knives and say to yourself " Hey those scratches on the blade weren't there yesterday in the shop".

Jeff
 
You should have decent all over lighting and task lighting as necessary. Light walls and ceiling help too.
 
my ceilings in the main shop are 13" up :grumpy:

I have mostly 8" lights but have been looking into the T8's for some time now Nicks on the right track for the over all lighting for sure.
he's getting ready for old age :D
just two 8' jobs will cut a lot of the shadows too...



Jeff if you don't put the scratches in the knives in the first place
who needs light ? :confused: :D :D
 
I am a firm believer in having at least one high intensity halogen near the buffer when doing mirror finishes. The sharp point source light shows up scratches better than fluoresents. Learned this trick by checking out the lighting in show venues where scratches showed up on blades that looked great in the shop, all of them had mercury vapour lighting.
 
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