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Type: Posts; User: BobL
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26th April 2024, 05:50 PM
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Good work! Its very satisfying to get it all up...
Good work! Its very satisfying to get it all up and running.
One caveat.
Initial testing did show 2 x 45º as marginally better than a 90º, but in ~2017 I did some further testing I found 2 x 45º... -
24th April 2024, 02:54 PM
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Those slivers won't worry an impeller but they...
Those slivers won't worry an impeller but they will eventually clog flexy.
Worse still if the clog and pile up sawdust and a stream of sparks (eg hitting a nail) hits the blockage it can start a... -
21st April 2024, 11:52 AM
Thread: HTPSWA Autumn Tool Sale
by BobL- Replies
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HEADS UP Yo Geoff, I'm going to try and come along and...
Yo Geoff, I'm going to try and come along and bring that set of old auger bits I said I was going to give you several years back.
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19th April 2024, 12:08 PM
Thread: Future of the Australian Electricity Market
by BobL- Replies
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In terms of influencing of outcomes by sponsors...
In terms of influencing of outcomes by sponsors it depends what sort of research and who's funding it.
When I did research on natural nuclear reactors in the 1980's funded by the Uni and the ARC... -
19th April 2024, 09:42 AM
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It's usually better to suck dusty air out than...
It's usually better to suck dusty air out than blow outside air in.
BUT
If there's only one air inlet to the shed eg a door, and the inside shed air is not stirred up this can create a reduced... -
18th April 2024, 05:18 PM
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That should be OK for cleaning up after the dusty...
That should be OK for cleaning up after the dusty and prepping the workshop for applying finishes etc. Ideally you want to capture escaping fine dust before it settles out because then just walking...
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18th April 2024, 09:38 AM
Thread: Castors for workbench
by BobL- Replies
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This link shows CAM operated feet small bench I...
This link shows CAM operated feet small bench I made about 6 years ago. It might give you some ideas.
Small surface plate bench -
17th April 2024, 07:39 PM
Thread: Personal EV journey.
by BobL- Replies
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Hi Mark, Not sure about other EVs but with mine...
Hi Mark, Not sure about other EVs but with mine Fwd and Rev are switched electrically on the steering Column. If car is moving forward at no more than 8 kph you can flick into reverse no problem....
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16th April 2024, 10:37 AM
Thread: Future of the Australian Electricity Market
by BobL- Replies
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I seriously doubt there ever was. I'm reading a...
I seriously doubt there ever was. I'm reading a book about the strange philosopher Nietzsche. He proposed somewhere in 1880 that just about every conversation/dialog/reporting/book etc has...
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15th April 2024, 11:46 AM
Thread: Future of the Australian Electricity Market
by BobL- Replies
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I'll let Paul supply a detailed answer but my...
I'll let Paul supply a detailed answer but my take is as follows
Solar can nominally be switched off immediately so they're only paying in the sense that they are not getting paid but they are not... -
15th April 2024, 09:51 AM
Thread: Future of the Australian Electricity Market
by BobL- Replies
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Paul I think this pretty well sums it up. The...
Paul I think this pretty well sums it up.
The only way they can make it pay is by subsidies and then we are back to paying more than we should.
The other thing to look at is time.
Just look at... -
14th April 2024, 09:30 AM
Thread: Belt sander belts
by BobL- Replies
- 12
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- 315
I've bought/acquired/used 100's of 100mm wide...
I've bought/acquired/used 100's of 100mm wide belts from Bunnings for my big Makita sander.
Over the 20 years I've had it, the sander and assorted belts have been "borrowed" by numerous mates and... -
12th April 2024, 02:24 PM
Thread: Future of the Australian Electricity Market
by BobL- Replies
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Not sure if mini grids differ from Micro Grids...
Not sure if mini grids differ from Micro Grids but there are at least 4 micro grids operating in WA and a bunch more in the pipeline.
Recently a couple of new micro grids in Nullagine and... -
12th April 2024, 12:14 PM
Thread: Opinions on IKEA air quality sensor?
by BobL- Replies
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PM2.5 readings are a catch all used for general...
PM2.5 readings are a catch all used for general air quality (smoke, ICE pollution, house and office dust, industrial pollution) but most wood working dust is above PM2.5 so they wont catch the bigger...
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12th April 2024, 09:51 AM
Thread: Opinions on IKEA air quality sensor?
by BobL- Replies
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A couple of cuts with a saw or most short term...
A couple of cuts with a saw or most short term activity in a shed containing only low amounts of suspended dust won't show up much on a particle counter.
What little fine dust is generated is... -
12th April 2024, 09:39 AM
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Quickest way will be to send him a PM - he's...
Quickest way will be to send him a PM - he's still around according to his activity chart.
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12th April 2024, 09:28 AM
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I'd buy the newest one (or the one with the least...
I'd buy the newest one (or the one with the least vibration, or quietest one) and replace the bags as described.
FWIW I use a mobile app to measure vibration because it is far more sensitively... -
11th April 2024, 08:00 PM
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50mm hose connected to shop vac is better than...
50mm hose connected to shop vac is better than nothing. You will get better performance if the guard is modified such that the collection point is in front of (not behind the blade) Lappa made a...
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11th April 2024, 07:58 PM
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30 year old ones are most likely to have cloth...
30 year old ones are most likely to have cloth bags for both collection and air filtration that when new are only good to about 30 microns, but worst of all likely to have a heap of micro holes all...
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9th April 2024, 12:09 PM
Thread: Sherwood 3hp 2 stage
by BobL- Replies
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Start by reading this...
Start by reading this https://www.woodworkforums.com/f200/draft-faq-dust-extraction-practical-aspects-154136#post1932353
Reality is, it is not possible to get sort of reliable reading at the end... -
9th April 2024, 09:40 AM
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I've had 2 of those generic 100mm compound vices....
I've had 2 of those generic 100mm compound vices. The first one was from Timbecon which didn't like being dropped onto my shed floor as it broke a casting. This was replaced by an almost identical...
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8th April 2024, 10:02 AM
Thread: Sherwood 3hp 2 stage
by BobL- Replies
- 5
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- 351
Just to add more complications, the quoted flow...
Just to add more complications, the quoted flow rates for the 2HP of 1200CFM are "in you dreams" territory - when I measured several of these about 10 years ago the best I got was half that. I would...
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7th April 2024, 09:36 AM
Thread: Best drill bit for 60mm mdf
by BobL- Replies
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Ha - I read 60 mm diameter - not 60mm deep. The...
Ha - I read 60 mm diameter - not 60mm deep. The OP does writesay "the holes themselves will be 60mm" but I'm not 100% sure what this means.
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6th April 2024, 11:54 AM
Thread: Best drill bit for 60mm mdf
by BobL- Replies
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I'd go hole saw (preferably tungsten tipped) over...
I'd go hole saw (preferably tungsten tipped) over a Forstner.
Tip: Drilling two 12mm diameter holes diametrically opposite each other kissing the outer circumference of the hole will enable the... -
6th April 2024, 11:48 AM
Thread: Future of the Australian Electricity Market
by BobL- Replies
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I read recently that Bill Gates is getting into...
I read recently that Bill Gates is getting into liquid sodium reactor nuclear power. Apparently he started his fund raising (via a company know as TerraPower) back in 2008 and the first reactor will...
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5th April 2024, 04:49 PM
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Dust collection usually obeys the law of...
Dust collection usually obeys the law of diminishing returns.
eg Spending $X will get you say 90% of the way there. To get to say 99% you have to spend 10$X and to 99.9% will need 100$X
There... -
4th April 2024, 11:25 AM
Thread: Opinions on IKEA air quality sensor?
by BobL- Replies
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Be careful using it when cooking. Baking is...
Be careful using it when cooking. Baking is usually OK but any sort of grilling/frying will make oily/sticky smoke and if too much of that get inside the sensor this may kill int,
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3rd April 2024, 02:13 PM
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Thanks - should be OK TimbeCon and...
Thanks - should be OK
TimbeCon and CarbaTech -
3rd April 2024, 12:47 PM
Thread: SWMBO has departed this mortal coil
by BobL- Replies
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A few weeks ago I was interviewed about Amanda's...
A few weeks ago I was interviewed about Amanda's passing and how I have been dealing with my grief, by a counsellor (Mary) from a local major hospital.
Mary helps patients (and families of... -
2nd April 2024, 07:47 PM
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2HP might be OK for a small shed - how small is...
2HP might be OK for a small shed - how small is it?
The downside of using that design without modification is that the air path has to do a 90º corkscrew when in enters the bag housing which... -
2nd April 2024, 12:27 PM
Thread: Opinions on IKEA air quality sensor?
by BobL- Replies
- 21
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These detectors work fine in a DIY woodwork shop...
These detectors work fine in a DIY woodwork shop provided you don't poke them direct into a direct sawdust stream or leave them on for too long because eventually they will clog. The time taken to...
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1st April 2024, 10:24 AM
Thread: Opinions on IKEA air quality sensor?
by BobL- Replies
- 21
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Well put Neil - my thoughts almost to the letter....
Well put Neil - my thoughts almost to the letter. :)
One caveat is that these and most other budget end units use sensors that for readings <10 µg/m^3 will have reading errors approaching 100% so... -
1st April 2024, 10:18 AM
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The overall effectiveness of a RAF (Room air...
The overall effectiveness of a RAF (Room air filter) Depends on things like.
- RAF performance specs
- Size and Shape of the shed
- Location within the shed
- Amount (and where dust is generated... -
31st March 2024, 02:00 PM
Thread: Future of the Australian Electricity Market
by BobL- Replies
- 2,078
- Views
- 88,283
There are a number of Key EVs available. The best...
There are a number of Key EVs available. The best perfroming ones typically uses a 20kWh battery for a range of 180km - that which is about 110 Wh/km without making much of an effort at improving...
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30th March 2024, 06:03 PM
Thread: Future of the Australian Electricity Market
by BobL- Replies
- 2,078
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- 88,283
Some other considerations that make us look even...
Some other considerations that make us look even worse
Japan has
- a much greater proportion of its land surface as mountains where it's not commercially viable to locate panels.
- to import... -
30th March 2024, 12:27 PM
Thread: Personal EV journey.
by BobL- Replies
- 200
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- 19,630
Battery capacity degradation depends in the type...
Battery capacity degradation depends in the type of battery being used. Some batteries, like LiFePO batteries, can be charged to 100% every day with minimal degradation. For day to day use standard...
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29th March 2024, 10:28 AM
Thread: Future of the Australian Electricity Market
by BobL- Replies
- 2,078
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- 88,283
During a sabbatical in Japan in 1995 I worked on...
During a sabbatical in Japan in 1995 I worked on a small (about the size of 20ft container) nuclear (research) reactor that was turned on at 10am and shut down at 4pm every day. It was capable of...
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28th March 2024, 06:44 PM
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depends on which 90º bend is used. at post 32...
depends on which 90º bend is used.
at post 32 and 35 in the same threads as the flexy dats.
https://www.woodworkforums.com/f200/blast-gate-gallery-211987?highlight=rocker+blast+gates -
28th March 2024, 12:15 PM
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A couple of things to consider. Those 6" gates...
A couple of things to consider.
Those 6" gates are inserted into the ducting or flex so they end up constricting the air path down to <140 mm diameter - this might not seem like much but it all... -
24th March 2024, 02:43 PM
Thread: how to cut aluminium cleanly??
by BobL- Replies
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Blade on backwards :oo: - its not the first time...
Blade on backwards :oo: - its not the first time this has happened - It even happened to an experienced woodie on this site who seems to have evaporated.
Negative rake applies to the forward... -
24th March 2024, 12:30 PM
Thread: Old Age and vision
by BobL- Replies
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Some ideas. The illumination may not appear...
Some ideas.
The illumination may not appear that bright in some of these photos but that is because the camera has to cope with the brightness of the lights so the surrounds don't always look that... -
24th March 2024, 10:36 AM
Thread: Old Age and vision
by BobL- Replies
- 18
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Incandescent lights are basically very hot bodies...
Incandescent lights are basically very hot bodies at 1000's of degrees so emit a broad frequency spectrum with a peak being temperature dependent, and in the infra red. This is why they get so hot...
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24th March 2024, 09:49 AM
Thread: how to cut aluminium cleanly??
by BobL- Replies
- 28
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Thanks Jack, that blade should work OK. Maybe try...
Thanks Jack, that blade should work OK. Maybe try slowing down the feed rate?
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23rd March 2024, 08:24 PM
Thread: how to cut aluminium cleanly??
by BobL- Replies
- 28
- Views
- 657
This is the same blade I have for both my TS and...
This is the same blade I have for both my TS and SCMS.
https://www.totaltools.com.au/135963-bosch-305mm-100t-tct-circular-saw-blade-multi-purpose-multimaterial-2608644607
I see the prices have... -
23rd March 2024, 08:00 PM
Thread: how to cut aluminium cleanly??
by BobL- Replies
- 28
- Views
- 657
You need a blade with NEGATIVELY raked teeth....
You need a blade with NEGATIVELY raked teeth. Regular wood blades have positively raked teeth to bite into the wood and self feed ie drag the material into the cut. Using this on Al will end up...
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22nd March 2024, 07:17 PM
Thread: Old Age and vision
by BobL- Replies
- 18
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- 621
Just watch out that many unscrupulous vendors...
Just watch out that many unscrupulous vendors will call their headband magnifier product "Optivisors" when they are clearly not.
One of the best things you can do to improve vision in a workshop... -
21st March 2024, 01:58 PM
Thread: Quest to Stop Dishwasher Drain Gurgling.....
by BobL- Replies
- 30
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- 1,246
The bacteria is likely to be the least of my...
The bacteria is likely to be the least of my worries compared to the 5-6 double shots of espresso I have daily. :oo:
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21st March 2024, 09:48 AM
Thread: why is this winch vertical lifting only??
by BobL- Replies
- 11
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- 452
I wonder if it is a result of something lost in...
I wonder if it is a result of something lost in translation.
Its probably just that the 600kg rating is the maximum vertical lift and somehow this got translated into saying that its a vertical... -
20th March 2024, 07:32 PM
Thread: Quest to Stop Dishwasher Drain Gurgling.....
by BobL- Replies
- 30
- Views
- 1,246
For many years I had the coffee machine drain...
For many years I had the coffee machine drain connected to just above the sink trap using a 2.5m length of hose (red line). The hose went through a hole in the bench top and followed a very shallow...
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20th March 2024, 09:58 AM
Thread: Future of the Australian Electricity Market
by BobL- Replies
- 2,078
- Views
- 88,283
I was mildly amused by this sentence of advice in...
I was mildly amused by this sentence of advice in the link for people who want to go and look at the wind power generators.