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  1. Thread: 2hp DE Build

    by BobL
    Replies
    78
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    1,439

    The blade shroud looks so constricted it will end...

    The blade shroud looks so constricted it will end up sucking very little anything because the air will find it much easier to go the other route. If that is the case you might consider removing the...
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    I don't think any LED tubes will work with the...

    I don't think any LED tubes will work with the electronic ballasts.
    LED tubes don't actually need a ballast to operate but for maximum efficiency, longevity and safety, there are special LED...
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    FWIW Bill Pentz doesnít think much of any...

    FWIW Bill Pentz doesnít think much of any separator..
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    Pressure drop will not change.

    Pressure drop will not change.
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    The DC-2 is indeed 1HP and moves so little air it...

    The DC-2 is indeed 1HP and moves so little air it simply cannot contribute much in terms of fine wood dust collection. I had a 1HP DC for 2 years, then a modified 2hp for a year, then a 3hp for 7...
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    Good question but I think I have answered that in...

    Good question but I think I have answered that in post #8 in the Recommendations thread.
    https://www.woodworkforums.com/f200/draft-ducting-recommendations-232898#post2173720
  7. Thread: 240v Inverters

    by BobL
    Replies
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    208

    How far back are we looking at? If it's less...

    How far back are we looking at?
    If it's less than a decade there've been no major advances as far as I know. Internal components may have become a bit more efficient but it's nothing dramatic and...
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    Thanks for the good wishes. SWMBO is slightly...

    Thanks for the good wishes. SWMBO is slightly better this morn but is moving around slowly and cannot tilt her head down without feeling crook. Meanwhile my unbroken ankle is hurting from hopping...
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    I bought one for SWMBO to take "camping and...

    I bought one for SWMBO to take "camping and carving" and as expected she's used a few times and now its cluttering up the shed.
    Seeing yours surrounded by electronics gear got me thinking I might...
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    One way is to drop steel balls onto the anvil...

    One way is to drop steel balls onto the anvil with a ruler held vertical near the drop point and record the rebound process with a slow mo video camera. Freeze frame the max height of ball rebound...
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    I saw the orthopaedic specialist on Thursday and...

    I saw the orthopaedic specialist on Thursday and after a few X-rays she (looked about 15 years old) said everything is healing nicely and she doesn't need to see me for another 4 weeks and if my...
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    Apparently if you belt this one with a hammer...

    Apparently if you belt this one with a hammer >90% of the energy comes right back at you or into the hammer!
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    Welcome. google is a much better search engine...

    Welcome.

    google is a much better search engine for these forums

    Insert any search terms, plus "site:woodworkforums.com/"
    This will restrict the search to the woodworkforums

    You can even...
  14. Thread: 2hp DE Build

    by BobL
    Replies
    78
    Views
    1,439

    I hate to see rotated photos and being such an...

    I hate to see rotated photos and being such an important endpoint in the project I just had to fix it! :D

    A more representative performance change from the power figures can be made by...
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    There are two aspects to this, getting the BIT...

    There are two aspects to this, getting the BIT and workpieces aligned, and then holding the workpiece to stop it turning slightly out pf position while being drilled.
    A barrel shape is even more...
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    2 projects in progress is a HUGE "I wish" at my...

    2 projects in progress is a HUGE "I wish" at my place. I have dozens of ongoing projects in the shed, half a dozen on my electronics workbench in my study, and I don't know how many partially...
  17. Thread: 2hp DE Build

    by BobL
    Replies
    78
    Views
    1,439

    Hummmm . . . . I wouldn’t leave it there. You...

    Hummmm . . . . I wouldn’t leave it there. You need every bit of flow you can get with that small blower. If needed I’d put one on each of the outsides.
  18. Great! - have posted it on the WA Mens shed FB...

    Great! - have posted it on the WA Mens shed FB page.
    Hope you get some enquiries.
  19. Thread: 2hp DE Build

    by BobL
    Replies
    78
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    1,439

    Looks good. Like the idea o the over-centre...

    Looks good.
    Like the idea o the over-centre catches.
    What is the acron nut in the middle of the top/bot panel?
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    Good question but I'm wondering if that is more...

    Good question but I'm wondering if that is more of a DC question. I'll have a think about it.
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    Sticky: DUCTING RECOMMENDATIONS: FAQs Q: I have heaps...

    DUCTING RECOMMENDATIONS: FAQs

    Q: I have heaps of 100mm ducting. Can I run two 100mm ducts instead of using 150mm ducting as they are about the same in cross sectional area.
    A: They are indeed...
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    Sticky: DUCTING RECOMMENDATIONS: Construction tips and...

    DUCTING RECOMMENDATIONS: Construction tips and Ducting Suppliers

    There are many ways to install/suspend/hang PVC ducting from ceilings and walls. The easiest way if available is to lay ducting...
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    Sticky: DUCTING RECOMMENDATIONS:Design layouts This is...

    DUCTING RECOMMENDATIONS:Design layouts

    This is potentially a complex topic requiring many considerations so all I will describe here are some general principles some of which will be quite obvious...
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    Sticky: DUCTING RECOMMENDATIONS: Terminations/Dust Ports....

    DUCTING RECOMMENDATIONS: Terminations/Dust Ports.

    By this I mean almost any junction, hood or means of attaching anything to ducting. Terminations are poorly understood and contribute...
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    Sticky: DUCTING RECOMMENDATIONS: Static In progress....

    DUCTING RECOMMENDATIONS: Static

    In progress.

    Back to TOC.
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    Sticky: DUCTING RECOMMENDATIONS: Junctions Although...

    DUCTING RECOMMENDATIONS: Junctions

    Although it is possible to make junctions from materials like MDF, PVC pipe works best with PVC junctions. However, there are a number of pitfalls involved that...
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    Sticky: DUCTING RECOMMENDATIONS: Ducting sizes. PVC...

    DUCTING RECOMMENDATIONS: Ducting sizes.

    PVC storm water ducting is only available in a limited range of sizes.


    NOM Size (mm)
    Mean OD (mm)
    Wall Thickness (mm)
  28. Replies
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    Sticky: DUCTING RECOMMENDATIONS: Ducting materials ...

    DUCTING RECOMMENDATIONS: Ducting materials

    Ducting can be made from a wide variety of materials, but ideally it needs to be smooth walled, lightweight, reasonably robust, inexpensive, and easy to...
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    Sticky: DRAFT Ducting Recommendations

    DUCTING RECOMMENDATIONS: INTRO

    This DRAFT thread covers recommendations/guidelines for a setting up the ducting for a woodworking dust extraction ducting.
    The emphasis is on ducting, with...
  30. Replies
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    OK have written the bulk of the text and it comes...

    OK have written the bulk of the text and it comes to about 6 x A4 pages.
    I have split these up into 8 separate posts that I will hyper link to a TOC in an intro post.

    What I would like to write...
  31. Thread: Where do I cut?!

    by BobL
    Replies
    11
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    473

    I agree, Unless you need pieces for craft wood I...

    I agree, Unless you need pieces for craft wood I would forget about anything <300 mm in diameter.

    2.6-2.7m is a useful minimum length that allows for a small amount of splitting and still being...
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    Q&D SCMS extraction

    A member from the mens shed (that I am still a member of) called me on Monday to ask about an extraction issue from the shed's SCMS which (putting it mildly) "makes a bit of mess". I stopped doing...
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    Good work on the router table. The limitation...

    Good work on the router table.

    The limitation on the draw from the outer fence will be the narrowness of the gap slot at the front of the fence.
    To get around this, openings in the ends of the...
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    Thanks Neil, I like your idea of linked...

    Thanks Neil,

    I like your idea of linked subtopics as individual posts in the same thread.

    This also might push me to keep going with this as I ran out of steam last week when I over did the...
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    One of these would do me. German Refflinghaus...

    One of these would do me.

    German Refflinghaus style: 90% rebound, weighs in at 210kg, and priced at $6K.
    see Quality Blacksmith Anvils for Sale Melbourne, Australia | Waterside Metal Art Studio...
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    Unfortunately no. On a related manner at...

    Unfortunately no.



    On a related manner at the top of our house attic we have a standard 300mm whirly bird at the end of a short 6" PVC duct with a translucent plastic cover over most of the...
  37. Thread: Karratha Flies

    by BobL
    Replies
    5
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    222

    One theory was they crawl up old timers noses and...

    One theory was they crawl up old timers noses and nose hairs are really flies legs dangling down.

    as for flies on cyclists. Cyclists “drag” a layer of air with them as the ride along and flies are...
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    Yep - Yep and Yep. They do work better if there...

    Yep - Yep and Yep. They do work better if there is a decent breeze blowing but my measurement of the chain flow rates were disappointing (Similar to DCs, basically divide manufacturers spec by two to...
  39. Thread: 2hp DE Build

    by BobL
    Replies
    78
    Views
    1,439

    It's easier than I first thought to make an...

    It's easier than I first thought to make an "rect/square to round" adapter.
    I've made several from first principles, but for those that can't work this out I recommend the "duct evolution" spread...
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    The ad says it has a "crack" - that's not a...

    The ad says it has a "crack" - that's not a "crack" its a complete fracture making the broken horn even more useless as a working anvil. Maybe a curio in a garden is all its good for.

    For those...
  41. Thread: Karratha Flies

    by BobL
    Replies
    5
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    222

    Most llies cannot fly faster than 9kph so when...

    Most llies cannot fly faster than 9kph so when the wind is consistently stronger than this they land on the nearest surface and walk about.
    Above about 50 kph they have to seek cover and the do...
  42. Thread: 2hp DE Build

    by BobL
    Replies
    78
    Views
    1,439

    I also thought about epoxy but just about...

    I also thought about epoxy but just about everything I make mechanically is designed around being able to be pulled apart and this drifts into simple things like this short bit of ducting

    3mm PC...
  43. Thread: 2hp DE Build

    by BobL
    Replies
    78
    Views
    1,439

    This might be of interest....

    This might be of interest.
    https://www.woodworkforums.com/f200/mens-shed-dust-collection-199450#post1908087
  44. Thread: 2hp DE Build

    by BobL
    Replies
    78
    Views
    1,439

    Not much, ~4% at 50 Hz. I was more interested in...

    Not much, ~4% at 50 Hz. I was more interested in what that mod could do @60Hz (greater turbulence at this speed but didnít feel like refitting the old flange to perform the comparative test.
    OTOH...
  45. Thread: 2hp DE Build

    by BobL
    Replies
    78
    Views
    1,439

    Something else to consider is using a bell mouth...

    Something else to consider is using a bell mouth hood entry to the impeller like this.
    https://www.woodworkforums.com/f200/upgrading-3hp-single-phase-dc-4hp-3p-motor-vfd-221218#post2086638
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    That's similar to what I observed for the CV at...

    That's similar to what I observed for the CV at the mens shed.
    My DC at home increase by 6%
  47. Any progress on the website. I've mention these...

    Any progress on the website. I've mention these to 2 mens shed and they would like to be able to peruse a website.
  48. Depends entirely on the magnitude of and time...

    Depends entirely on the magnitude of and time period over which the current is drawn.

    I assume the draw is only when the gates are being activated open or closed?
    In that case its few seconds...
  49. Replies
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    Anyone wading through sawdust probably needs more...

    Anyone wading through sawdust probably needs more than a vacuum cleaner or small DC, and unfortunately more than $150 to solve this problem.
    Suggest starting by reading around in the dust forum and...
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    Thanks for the continual feed back. RE: Dust...

    Thanks for the continual feed back.

    RE: Dust collectors; As well as taking too long, I'm barely in the mood to write something about ducting. :)

    Lance: Your question is easily and quickly...
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