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Thread: Another new shed build
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22nd April 2019, 09:32 PM #31Senior Member
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Down pipes have been connected to storm water, and final building inspection has given the thumbs up. So, time to get my stuff out from under the tarps in the back yard and into the shed. After this, first job has been to install the extraction fan with ducting. Standing directly below, noise is 67db, outside with doors open is about 55db. I plan on installing a variable speed switch, so I can at lower speeds when I am not creating dust. Electrician comes in the morning to install lights and power. Next job is building the DC cabinet, and make a start on connecting to the various tools. A few photos below.
1.jpg2.jpg3.jpg
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22nd April 2019 09:32 PM # ADSGoogle Adsense Advertisement
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23rd April 2019, 09:41 AM #32Senior Member
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Looking good, like the exhast fan. Appears like you have plenty of room, now, I'm sure that will change quicker than you expect. .
Be interested to follow your DC build.
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23rd April 2019, 12:54 PM #33Senior Member
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25th April 2019, 11:45 AM #34Senior Member
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Started to build the DC cabinet. A quick question. I plan on making vent 600 x 600. Does this sound about right? Thanks
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25th April 2019, 01:25 PM #35.
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26th April 2019, 01:28 PM #36Senior Member
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9th June 2019, 08:30 PM #37Senior Member
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Been quiet for a month. Been overseas and the missus has had me doing stuff around the house, so little time in the shed. Finally got the cabinet built, added a small bench and have started lining the walls. I ended up using formply. Since I am venting the cabinet externally, I thought formply would probably stand up the best if it got a little wet. I considered marine ply just for the paneling around the vent, but you need take out a second mortgage for it! Bloody expensive. Since I plan on hanging cupboards or a french cleat system off the walls, I wanted ply for the wall paneling. Formply proved a reasonably priced option. Bunnings has 1200 x 600 x 17mm sheets for $11, so $44 for the equivalent of a 2400 x 1200 sheet, which is $70. Seemed a no brainer to me. Putting R3.5 insulation in the walls as I go. Now I have to assemble the Dust Collector, H&F DC 7 3 hp. and work out ducting and final tool locations.
Cabinet.jpg
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18th June 2019, 09:48 AM #38Senior Member
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Hi Bob, thought I posted this question to you, but it doesn't appear so, so apologies if I have asked twice. I want to run an 88 degree angle almost straight out of the DC, so I can run ducting through the top of the cabinet. Otherwise I would have to run duct straight out through the doors which would be a real pita. I think I read somewhere that your suggestion was something like a minimum of a metre between junctions etc, so would a angle straight of the DC be a problem?
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18th June 2019, 10:16 AM #39.
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18th June 2019, 02:07 PM #40Senior Member
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Thanks Bob
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24th July 2019, 11:54 AM #41Senior Member
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I have started running the DC ducting. Using an anemometer (cheapie off Ebay) I get 2400 cfm straight out of the dc. As seen from the photos, I had to run an 88 bend virtually straight off the DC to go up through top of cabinet. I tested the airflow at the junction you can see in the photos, and still get 2400 cfm. So far so good.
I will start making blast gates (swing type) this weekend, so I can install the gates as I go. There are a few pics below and a rough plan for the DC ducting. It is being run at around 2700mm from the floor, so well out of the way. Any thoughts or suggestions before I get too far ahead are most welcomed
DC Plan.jpg DC.jpg DC duct.jpg
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24th July 2019, 11:58 AM #42.
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24th July 2019, 12:13 PM #43Senior Member
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Am getting about 78 db about 1m from the cabinet, but I have not sound proofed the doors yet, so hoping I can get this down to around 70 db or better. Not sure this is possible, as it seems a fair bit of noise comes from the duct work. May try wrapping it in insulation once I have finished if noise is an issue. Cabinet is airtight, tested the doors with a blower. No air coming out so happy with that. The vent is right behind the motor, and is 400mm x 350mm. Noise outside is quite low, around 60 db 2m from the vent (closest I can get to it), so hopefully the neighbours will not be too concerned.
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24th July 2019, 12:16 PM #44Senior Member
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24th July 2019, 12:19 PM #45Senior Member
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As stated, it is a cheapie off Ebay. I got it not so much to measure the CFM, because I have low expectations of accuracy. I wanted to measure the decline in performance as I added piping, junctions and flex hose. In particular, I want to see what I get at the machines. I assume that what I start with is what it is. Maybe what I can do is reduce the drop by minimisi9ng flexi & the need to reduce to 100mm where possible. Hope that makes sense.
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