Thread: Fletty's new shed WIP ....or is it a retrospective??

Peter, these are known as Board Buddies, over the pond. Green are omni directional, Yellow are for Tablesaws, with the fence on the right of the blade.

i grabbed one of those no stupid people beyond here sign for my workshop after seeing yours.

Fits perfectly across the I beam on my mezzanine floor, the only problem after i read the sign, i can't go pass the mezzanine floor I beam

I've done a lot of stupid stuff over the years

Originally Posted by bryn23

I've done a lot of stupid stuff over the years

Well last night I had some charcoal chicken and a boiled egg for dinner.

Took bloody ages to eat and was stone cold by the time the first mouthful went down - I couldn't figure out which to eat first.

I had a 'zen day' today. I've finished and delivered a couple of commissions lately and so today was tidy up, remove a couple of millstones from my shoulders....... and have fun!
The dresser that I repaired a few months ago was French polished but I rushed it and so, unfortunately, it blistered in this summer's 50degree C heat. It got dragged out of storage, returned to the centre of the shed and the first millstone removal commenced.
I had bought a couple of pieces of I-must-have-that timber at a nearby timber yard, kwila and bunya pine, and decided that they would combine beautifully to make a couple of stunning boxes so that started today too. This was the first real zen moment. For the first time, I was able to work as I had dreamed, wheel out a machine, connect the boom dust collector and power, resaw, thickness, drum sand the box pieces and wheel everything back out of the way..... a machine shop in a pocket!
When I retired, which was not a universally popular decision , I bought MYSELF a retirement gift......

image.jpg

...... one of Terry Gordon's beeeeautiful moving fillister planes. I think Terry had taken pity on me and honed the blade before delivery!
I'm planning on using it on the boxes and on my next major project, the rebated panel sides of a wine dresser, so today was a trial. It was a true joy to see curly SHAVINGS come from a CROSS GRAIN cut!
Then, to cap the day off before a glass of red, I successfully took a picture, the one above, on my new camera, transferred and reduced the picture via NFC, in a non-wifi environment, to my iPad ...... and posted this?
Ahhhh.......... the serenity........

Alan

It's good to get a few wins under your belt, or so I'm told....

That moving filister is a real treat, but is the timber Gidgee? It looks to have a purplish tinge so may be something else, but that could be a trick of the light, a feature of the new beaut camera or the skill of the photographer.

Regards
Paul

Originally Posted by Bushmiller

It looks to have a purplish tinge so may be something else, but that could be a trick of the light

Yes, it is Gidgee Bushie, bathed in blue light flooding through the window from a clear sky.

Hi Guy's no matter how much I read I just get confused then more confused LOL I have finally after about 9 years decided that i need to put some extraction into the workshop. I have just got one of the Carbetec 2hp extractors with the 2x100mm outlets so now where to start ? I was looking at doing PVC through the shed but flexible bits where needed ? But are you guys saying not to use the 90mm stuff and be sure to use the 100mm PVC ? Happy to take on your advice because I need all the help I can get.

At theis stage I have really only purchased the blast gates and the gear to go behind my lathes

Thanks again

Ian

Originally Posted by Dorno

Hi Guy's no matter how much I read I just get confused then more confused LOL I have finally after about 9 years decided that i need to put some extraction into the workshop. I have just got one of the Carbetec 2hp extractors with the 2x100mm outlets so now where to start ? I was looking at doing PVC through the shed but flexible bits where needed ? But are you guys saying not to use the 90mm stuff and be sure to use the 100mm PVC ? Happy to take on your advice because I need all the help I can get.

Before you go any further go to the dust forum and spend a few hours on that to see why 100 mm ducting is a bit of a waste of time - then ask specific questions.

Originally Posted by BobL

Before you go any further go to the dust forum and spend a few hours on that to see why 100 mm ducting is a bit of a waste of time - then ask specific questions.

Maybe you could give him a link to a specific thread. It can all be bit overwhelmingly when first looking at this stuff

DaveTTC
The Turning Cowboy
Turning Wood Into Art

Originally Posted by DaveTTC

Maybe you could give him a link to a specific thread. It can all be bit overwhelmingly when first looking at this stuff

I'd start with the first thread in the forum on the generic 2HP DC.

Originally Posted by Dorno

Hi Guy's no matter how much I read I just get confused then more confused LOL I have finally after about 9 years decided that i need to put some extraction into the workshop. .........
Ian

Good Morning, Ian

I suggest that you go to the Dust Extraction Forum and do some solid reading, especially stuff written by BobL. A good start would be BobL's two FAQ threads:
DRAFT: FAQ - Dust Extraction (Theory)
DRAFT: FAQ - Dust Extraction (Practical Aspects)

But you really need to do a lot of reading; there is a lot of misinformation out there, much propagated by major manufacturers and vendors, and it is easy to spend a lot of money for little benefit.

It is largely about airflow and its enemy, friction and turbulance.

An excellent source outside the forum is Bill Pentz - google him.


Fair Winds

Graeme

Thanks for this information. I am reading through it all but for someone like me who does not know the technical stuff all I am doing is getting confused LOL? Am I doing the right thing if I use just the one 90mm PVC pipe and block the other outlet ? I was planning to runthe one pip up the middle of the workshop then branch off with the 90mm accros to the smaller machine where I can then downsize the tubing ? Putting Blast gate in where needed with a hope to give each machine when I use it maximum use of the extractor ?

Cheers ian

I think the biggest hurdle is getting your mind around volume v's air speed v's duct size. One of the things that might help is having a piece of 90mm pipe and a piece of 150mm pipe side by side to see the difference in AREA that exists between the two and anyone who does that always comments on how much difference there is between the two.

The extractor creates a certain amount of "suck" to put it in simple terms.

At that level of suck a pipe can only flow so much air

Let's presume the above pipe was flowing the maximum it could at the given amount of suck, if the amount of suck was to be increased the pipe would flow more air because the air speed would rise.

If the same amount of suck would be applied to a bigger pipe the pipe would flow more air but the SPEED would not rise significantly only the VOLUME OF AIR flowing in the duct would rise

Dust extractors do not apply a lot of suck to the duct, they rely on volume not air speed. This means that dust extractor will work better as the size increases but there is a tip over point where the air speed will fall and the dust extractor will not flow any more air. As the airflow speed decreases the amount of dust carried decreases in that case

A vacuum cleaner is the opposite, it relies on a smaller duct being used as its operational efficiency is based on air speed and as the pipe size goes up the air speed drops

Both types have their place but overall a vacuum cleaner will not flow enough air to make any significant difference to air quality in a work shop. They are high speed/low volume devices

A 2hp generic dust extractor as most here use with bags and filters is marginal for air quality purposes, and preferably not used. Its flow limits are two low for this purpose despite what the salesman says.

A 3hp generic dust extractor using bags and filters can be made to do a good job but requires a lot of modification and careful installation to do a good job but it will do that job

A cyclone generally does a better job due to a bigger impeller and it physically scrubs the air and then exhausts it to the atmosphere or into filters and returns the air to the workshop. Most cyclones in Australia vent straight to atmosphere thus not having the issue of returning air needing to be run through filters. The latter practise is done where weather conditions don't allow the loss of conditioned air. A Clearvue Cyclone in Australia is about the epitome of dust extraction that is available to the hobbyist.

It is a proven fact that all generic dust extractors sold with no exception never flow the amount of air that salesman tell you they will.

This is a very general rough outline of what the problems are. It is reckoned that a volume of 1000 cubic feet a minute is about the minimum that is tolerable for good air quality. It becomes a balance of duct or pipe size against what the dust extractor will flow when attached to the ducting system. The better the dust extractor the bigger the pipe size.

When looking at cyclones the acknowledged best design is the Clearvue, in Australia it is the only alternative to the generic Asian extractor in general terms and with only one or two exceptions.

Others may add to this but these are the basics. PM me if you want to have a chat on the phone as confusion is always the problem when dealing with this stuff.

Hi Ian

As I said above, But you really need to do a lot of reading; there is a lot of misinformation out there, much propagated by major manufacturers and vendors, and it is easy to spend a lot of money for little benefit.

I had to read the stuff about ten times before the science started to make sense, and slowly the fog lifted.

Chris's statement about commercial dust extractors are well founded. Their airflow figures is a theoretical (read fictional) figure calculated without any ducting or filters in place. In the real world, few, if any, will achieve 50% of the the advertised airflow figures.

Cyclones are very effective.

Happy reading!



Cheers

Graeme