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For anybody who may have the same problem in future, I ordered a replacement part from the toolsparesonline UK site referenced above, it only took a week to arrive here in Australia!...

I have exactly the same problem and just found this thread, very helpful. Just like the OP, the gear on the end of my orange plastic part has been worn away somewhat. Thanks for sharing.

My first attempt at making a blast gate, using a couple of PVC pipe lengths, some scraps of 6mm ply and scrap hardwood for handles. Simple but effective.

i created a MDF template hole to just fit...

432986
Our family visited the Questacon science museum in Canberra today. I found a flex hose installation that needs just a little optimisation and advice from the forum, chuckle!

Looks very similar to mine. My plastic collection bags, sold by CT to fit the FM-300, have an open end circumference about 10 cm larger than the mounting circle on the DC. Practically this means the...

I'll have to do some experimentation to work out what's most effective.

To reduce a 6" to 4", does a butchered flower pot taper do the job well? (And if so, is there a better way to join it to the...

I fabricated this 'Jonno' style adaptor out of plywood to modify a generic Carbatec 2hp DC and connect the bag ring directly to the impeller output.

In the end I've decided on a totally different...

After getting my modified 2hp dusty into its own shed outside the workshop, I'm now turning my attention to new connections for the TS.

My TS has a 4" port below the table at present, and the plan...

I've plumbed the intake back to the workshop.

SPL at 1m now measures 63dbA ... a great result as the measure with the door closed before I installed the baffle was comparable, so the baffle is...

Ok, I've finally got the DC back into the shed. I had to partially disassemble it to turn it 90 degrees through the door now that I've reduced the space inside with the soundproofing.

I've...

No room for a second bag in my shed, but I could swap the bag for a PF if that decreases the back pressure?

The 6" input to the impeller is now installed. I'll fabricate a manometer and take some hard measurements plus redo the noise level check after I get it back into the shed. It certainly seems to be...

Thanks Bob, silly me, you were talking about flow loss in the previous paragraph then mentioned SPL and I misinterpreted that as referring to static pressure level, i.e. WC"

I will need to get new...

Silly question, but how do you measure SPL?

I can make up a u-tube manometer easily enough, but not sure how to hook it into the duct work, or whether the inlet duct needs to be blocked off when...

I've revised my plan with the DC configuration. Rather than building a frame to lift the motor up to the same height as the bag unit input, I'm now going to keep the motor section lower down and...

I got some old rubber-backed carpet tiles and lined the shed with it, including the roof. (Note double stick carpet tape doesn't hold on roof and walls, I will have to get myself a tube of...

Ok. Another set of test. This time I rebuilt the whole DC in the shed, and ducted the input back through into the workshop. As I currently have 6" ducting between the shed and workshop, and a 4"...

Ah, ok that makes sense.

I've only ever had the one DC so if there was something unusual with the noise or vibration then I might not be aware of it.

I just tried starting it up and pressing...

My DC impeller must be much noisier than yours.

I just went into the garage and measured the following, at 1m away from the DC motor/impeller, and 1m above the floor. (Note at present the impeller...

Thanks. I believe that blocking the impeller inlet with the whole DC in the shed will fail to take into account the noise from normal airflow through the bags. Currently the air duct into my shed...

Perhaps I should have used FC as the internal cladding inside the shed rather than MDF?
I will try and find some cheap scrap/surplus carpet as internal lining.

No, I haven't yet modified the intake to 6" ducting so was t able to connect it up for the test. When I did the test with the full DC in the shed, it was with a naked input, and the ducting into the...

Today I reassembled the full DC inside the shed and took some sound measurements, again standing 1m away.

64db background noise (same as yesterday)
85db with the DC on and the door open a few...

I have been working on noise reduction in the shed (which currently holds the bag/filter collector only, with the motor and impeller still in the garage)

I ripped some 4x2's down the middle and...

Test fit of the duct work. I still have to change over the bag/filter connection to the 'Jonno' adaptor.

I downloaded an iPhone DB meter and took some measurements.

Inside the garage ~46dBm...

I have had some time to get back to the project today now that Christmas is over.

1. Removed the lower glass window pane and replace with acrylic/Perspex, with a corner removed and replaced with a...

Up until now I've been working through the problem of getting the DC outside (or at least the leaky bag and filter half of it) but had a bit of a blind spot on the inside implications of doing that....

Yes thanks, did that already with the steel brackets which incorporate a 45 brace. They are painted black so are hard to see in the photo.

Sizing up the inside half of the unit so I can work out where to cut the hole in the window pane . I'll be able to move it closer to the window once the hole is there.

To avoid a 90 bend straight...

> I'm not quite sure what you mean by "interfacing two cylinders"?

Connecting the horizontal cylindrical 6" pipe with the vertical cylinder from the bag/filter unit.

I've cut out the pipe along...

I'm working on the bag end of the pipe now - a short journey back to high school geometry and trigonometry to calculate the required curve to interface two cylinders.

I'm sure there are online...

Thanks Bob, interesting reading & your expertise is most valued.

In my setup, the ducting we are talking about is on the output side of the impeller - ie the airflow is being driven into the bend...

Oh, ok thanks.

I had assumed that two 45 degree bends would lose less flow than even the 2R 90 degree bend. But if the 2R 90 will only drop 1% of the flow, that's easier to do (and cheaper too)....

> A large radius 90º bend will be better than 2 x 45º bends

I'm not sure how I'd do that. DWV and storm fittings don't come in large radius bends. I could try filling the pipe with sand to stop it...

A bit more context ... this is the back wall of my garage with the shed behind it. On the right is the boundary fence with my neighbour's outdoor entertainment area behind it.

My plan is to remove...

> What is your small shed made of? May may need to seal it properly, add some more weight to the walls and add a sound muffler/baffle to let the air out.

> Moulds/formers will form a better shape...

Resurrecting my old thread. For many reasons, I haven't made much progress on my dust collection project since last Summer. But I'm finally back onto it.

After building a small shed behind my...

Thanks BobL and Lappa.

I've started my build with a slab pour for the DC shed. Looking forward to some clean air woodworking in the near future. I'll post some photos on progress as I go.

Ian

I've been re-thinking through the options and now I'm considering putting the whole DC outside and directly coupling the impeller and collector sections as per the generic 2HP mod thread.


After...

Seeking advice from the resident experts.

I have a Carbatec 2HP DC on mobile castors which I've been wheeling around my garage workshop but am now looking at more permanent mounting options.

I...

Hi all

I've recently finished building a cantilevered router table extension for my table saw and am looking for a magnetic paddle switch to operate it, similar to the one on the saw (see pic, but...

I don't think so, a template created that way would be wider than the glass, and using the same bit directly with the template will just copy the template and the hole in the countertop would be too...