LumberJocks

Tool Tip #30: Tool air cooler

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Blog entry by robscastle posted 07-19-2017 09:11 PM 878 reads 0 times favorited 5 comments Add to Favorites Watch
« Part 29: Alternative use for Transfer Punches Part 30 of Tool Tip series Part 31: Using the Standard Gifkins Dovetail Jig with timber wider than the recommended 310mm »

Majuvla’s post prompted this one.
Not wanting to hijack his post or to be seen as to be tacking on the end of his here it is.

My grinder I use for linishing and all those sorts of jobs, also has a white wheel fitted for sharpening tools as well.
When sharpening chisels and items sensitve to changes from heat build up they can be cooled with chilled compressed air directed through a vortex to prevent the tool being subjected to temperature build up.

Its operation requires dry clean air to work so you will need to have a filter and moisture trap fitted to your outlet.
Most woodworking applications have this as the norm when used as a duster, then attach it to the metal part of the grinder cover by its magnet.

Then and then apply air.

You get two effects one outlet which produces heated air and the other outlet chilled air.

No moving parts involved (except the air) and it directs a cold stream of air onto your woodworking tools undergoing sharpening to assist in cooling them.

In case you were wondering what a vortex is:-

What Is A Vortex Tube?

A low cost, reliable, maintenance free solution to a variety of industrial spot cooling problems. Using an ordinary supply of compressed air as a power source, vortex tubes create two streams of air, one hot and one cold, with no moving parts. Vortex tubes can produce:

Temperatures from -46° to +127°C (-50° to +260°F)
Flow rates from 1 to 150 SCFM (28 to 4248 SLPM)
Refrigeration up to 10,200 Btu/hr. (2571 Kcal/hr.)

Temperatures, flows and refrigeration are adjustable over a wide range using the control valve on the hot end exhaust.
A closing note:-
The differiential temperatures are based on incoming air temperatures, meaning the hotter the incoming air the less cooling and the colder the air the less heating.

-- Regards Rob



5 comments so far

View Joe Lyddon's profile

Joe Lyddon

10324 posts in 4256 days


#1 posted 07-19-2017 09:23 PM

I thought all one did was to dip’em in water… (??)

-- Have Fun! Joe Lyddon - Alta Loma, CA USA - Home: http://www.WoodworkStuff.net ... My Small Gallery: http://www.ncwoodworker.net/pp/showgallery.php?ppuser=1389&cat=500"

View robscastle's profile

robscastle

5489 posts in 2407 days


#2 posted 07-19-2017 09:25 PM

Oh Joe you have ruined my post in one line !!

-- Regards Rob

View Joe Lyddon's profile

Joe Lyddon

10324 posts in 4256 days


#3 posted 07-19-2017 09:28 PM

Sorry, didn’t mean to… I just never heard of a tool AIR COOLER before… (?)

-- Have Fun! Joe Lyddon - Alta Loma, CA USA - Home: http://www.WoodworkStuff.net ... My Small Gallery: http://www.ncwoodworker.net/pp/showgallery.php?ppuser=1389&cat=500"

View pottz's profile

pottz

3582 posts in 1188 days


#4 posted 07-19-2017 09:29 PM



I thought all one did was to dip em in water… (??)

- Joe Lyddon


me too,i like joes idea,simpler-lol.

-- sawdust the bigger the pile the bigger my smile-larry,so cal.

View robscastle's profile

robscastle

5489 posts in 2407 days


#5 posted 07-20-2017 12:37 AM

No problems there Joe and Pottzy possibly why I rarely ever use it

The marvels of technology:

1x Grinder and cup of water
or
1x Grinder and air compressor and some high tech gear ,and even then even still possibly water too!

Cost a small fortune too. Oh the things you buy thinking you can use them when first starting out.

Even the wheel gets very little use as I turn to my Work Sharp for those sort of tasks, it produces amazing results

-- Regards Rob

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