Needs Pictures: 0
Results 16 to 22 of 22
-
21st April 2017, 06:22 PM #16.
- Join Date
- Feb 2006
- Location
- Perth
- Posts
- 27,793
I was in at Bunnings today looking at their plastic pot offerings in hope of finding a basic 9" to 6" ducting transition when I stumbled across these types of pots.
This one was not wide enough at the mouth for my transition but it would make a reasonable BMH.
Pros
Good basic shape, made of strong plastic - I think its HDPE.
Unlike many pots the holes are only on the bottom, Most pots have gaps up the sides as well (whereby they would leak air)
The base suits a 6"/150mm duct (I'll show you how further down) and the opening has a nice wide radiused edge.
Cons
They are longer than the optimised 6"/150 mm BMH so will take up more space - but that might be OK for a lathe or Belt sander situation and maybe even for some cabinet ports
They are wider than the optimised 6"/150 mm BMH so would not project higher air intake speeds as far as the optimised hood.
The radius of curvature is not quite right
But Hey - for $6 they have to be better than a naked piece of duct.
Playpot.jpg
Here's how I would convert these.
These photos are of the 6 = 9" transition I am making has the same size 6" base as the above pot, but this one has an opening that is a little wider than the above pot
Cut the bottom out with tin snips or a strong pair of scissors. Leave a couple of mm of lip for a longer/tighter contact with the 6"/150 mm ducting.
These pots have 4 little ribs on the inside corner and these need to be completely cut away with a utility knife.
Put the pot on top of a piece of PVC ducting and while rotating the pot, heat up the outside edge of the pot base with a hot air gum until the plastic develops a sheen.
Don't let it get too hot or it will melt and ruin the edge.
To get a feel fr how hot practice on the scrap you cut out from the base.
Plantpot2.jpg
Then, push and stretch the edge of the pot base over the PVC duct - considerable force is required.
push the pot right down to the end of the pipe.
You could radius the inside edge of the duct for an improved flow and can seal any small gaps with something like silicone.
When it cools it grips the PVC ducting like a shrink fit tube.
It took me about 5 minutes to make.
For my transition the 9" (250 mm OD) duct slides neatly up to the first ridge line inside this pot so it should be OK as a reducer.
Plantpot3.jpg
-
21st April 2017 06:22 PM # ADSGoogle Adsense Advertisement
- Join Date
- Always
- Location
- Advertising world
- Posts
- Many
-
21st April 2017, 09:01 PM #17
Bell mouth hood offer - expressions of interest
Have you ever had trouble fitting flex ducting over your hoods? I bought 3m of 150mm ducting from Timbecon a few weeks back and couldn't for the life of me get it over the pvc hood. Didn't think to measure it before I bought the ducting, only realised after that the pvc pipe is slightly larger than 150mm. Hoping I can use it, stuff ain't cheap!
-
21st April 2017, 09:19 PM #18.
- Join Date
- Feb 2006
- Location
- Perth
- Posts
- 27,793
You won't get it over - you need to use a coupler like this.
Improving machine cabinet dust ports
This is a much better way anyway because it does not reduce the size of the duct.
Or buy some expensive flexy from over east.
-
21st April 2017, 09:24 PM #19
So just to be sure, one of these guys in 150mm?
DWV FITTINGS - DWV ACCESS COUPLING - Pipe Online - Retic Fittings , Plumbing Fittings, Reticulation Supplies supplied Australia wide
-
21st April 2017, 09:59 PM #20.
- Join Date
- Feb 2006
- Location
- Perth
- Posts
- 27,793
-
21st April 2017, 10:00 PM #21
Gotcha, cheers mate!
-
22nd April 2017, 09:49 AM #22SENIOR MEMBER
- Join Date
- May 2014
- Location
- Canberra
- Posts
- 237
That's the Bunnings pot I bought for my 6" to 8" inlet reducer. If that doesn't work at least there is another use for it (other than as a plant holder)
Jane
Similar Threads
-
Bell Mouth in PVC
By Chris Parks in forum DUST EXTRACTIONReplies: 15Last Post: 4th December 2016, 07:23 PM -
Bell Mouth inlets and outlets for optimum air transfer
By BobL in forum DUST EXTRACTIONReplies: 6Last Post: 24th July 2016, 01:10 AM -
Bell mouth from wood for drill press
By safari in forum DUST EXTRACTIONReplies: 3Last Post: 23rd February 2014, 05:35 PM -
Expressions of Interest
By Froggie40 in forum WOODTURNING - PEN TURNINGReplies: 14Last Post: 20th January 2007, 05:06 PM