Here is a list of all the postings jason udall has made in our forums. Click on a thread name to jump to the thread.
|Thread: Electricity Supply|
Thrid time trying..very trying
Rolec charge points 32A single or three phase
Let's say 7680watts( assume cos phi near 1)
Assume 80-90 percent conversion in charger and battery
Modern showers worse than that
Tesla model 3---60 kwhr
So that's overnight
All do able
Apart from when everyone is doing it and your kerbside parking is not near your house tonight...not all have drives
And just imagine all those charging leads across the pavement?
|Thread: Which thread for T nuts|
I have some tee nuts...long version longer to spread load..
If you made long nuts tapped say 10 in the middle and say 6 mm and 8 mm either side..thus , as has been said you have the flexibility to use the thinner studs...
Edited By jason udall on 09/05/2019 18:13:28
|Thread: You tube videos of entertainment if not informative|
Here's another quirky YouTube video
This guy is fun
Bonkers but definitely fun
|Thread: Metal ball joints for 1/3 scale action figure?|
Just had a thought.
Might be a bit ott but what about a knogo(so?)
Dial guage/ indicator stand?...one I have used in the past could be see for friction and "posed"
|Thread: Lathe screwcutting|
Err just checking....when you inverse tool.....did you check tool height.... don't ask
|Thread: Precision division plates|
So the base accuracy of dividing head is matching of worm and wheel...
This first needs two threaded parts. .of the same pitch and diameter.
One is made into a tap...
The other becomes your worm.
The tap is used to cut the worm... choosing the pitch/circumference ratio desired...which regardless of the pitch will be known...we now have accurate reduction drive.
Now let's think about how you without a screw cutting lathe could generate a screw thread if CONSISTANT pitch?...
Chase a long screw thread...as fine as you can file the chaser
Now arrange to hold many pitches of this thread ( two flat plates) ..you now have a CONSISTANT but weak thread...use this to drive screw cutting for stronger thread also accurate....now make the screw thread required above....
For a laugh...Google Watt micrometer for
|Thread: You tube videos of entertainment if not informative|
Just be clear
Mods Edit. Posts about the wrong man have been removed.
Edited By JasonB on 24/01/2019 18:35:44
|Here's a link for Pablo https://en.wikipedia.org/wiki/Pablo_Cimadevila_%C3%81lvarez|
In this I see a more plausible birth date of 1976... The previous wiki suggested 1957...
I too was surprised .
He works in gold and platinum but seems to show none of the "hygiene" over swarf seen in the gold trade.
Just watch his investment casting station.. foundry is too small a word.
This guy might find the fiddling about with swarf Vs time not worth it....lucky guy
|Can highly recommend other videos by him . He does the lost wax investment casting bit..|
One of his things is to laser engrave finger prints of the customer into the inside of the ring.
Edited By JasonB on 21/01/2019 12:15:51
|Thread: PLA not Sticking to Bed|
|I use"pritt" stick other brands available and also work|
|Thread: Horn Antenna for Radio Astronomy|
|Looks about the same size as a J band one I built at uni.|
Of course at J band even though simular size much bigger in wave lengths (J band is 15 to 30 mm ) and from memory Large end was 800 mm..again from memory output was 15 mm widest so area ratio 2800 gain of around 28dB measured mid band..
Learn to weld brass for this..using beautiful Oxy hydrogen torch..
Edited By jason udall on 03/12/2018 19:06:45
|Thread: The demise of the High Street|
|So. It would seem that the policy to discourage the use of cars from towns is a success.|
Shame these same planners didn't see the obvious consequences...no cars =no drivers
No drivers= no customer for shops.
|Thread: What bearings for a submersible wheelchair?|
|Dry bearings would be the way to go.|
Because any kind of lubrication will upset risk assessment bods.oil or the hint of a risk of oil ib the pool .Even PTFE built into plastics .. would be called a lubricated solid..just avoid that discussion So choose a self lubricated solid. Though avoid leaded bronze or similar...
Edited By jason udall on 05/10/2018 21:36:00
|Thread: D bits|
|I know it's obvious but check your drill shank is the desired size ....|
|Thread: Tool i/d and Mitutoyo vernier advice please.|
|If that dial caliper is an after market mod then it must be common...I have seen one with the same Adulteration...on inspection the finish appeared factory fresh on the cut off bits|
|Thread: What type of glue to use...|
|I would go for "Pritt" or any similar paper glue...|
Soak in water to remove..paper and glue
|Thread: How can I drill a deep, non-standard, small diameter, hole?|
|Can I suggest |
Wire of proper what is the diameter diameter ..expoxy fill bush..letting wire set.
Apply current to wire allowing wire to heat..pull wire free.. leaving hole..
Some experiment will allow wire selection to leave a hole of suitable fit
Edited By jason udall on 08/07/2018 16:26:00
|Thread: Controller for a 3 axis lathe|
|Here's my two pence|
X axis on mill is front to back up axis is left right
Z is along the spindle
Lathes map these the same but less "arbitrarily"
X effects diameter through center line
Z length of part to and from headstock
Y axis is generally interpretated as tool height not generally used that way
The C axis is also controlled for "pseudo"y axis where a plane x' -y' is wrapped around the part in a cylinder using C axis and z ...and X axis being z' or depth
Now your control may or may not understand all that as must your CAM Software...
A milling control without a turning mode won't be able to convert all those axis /coordinates for you..but I have in the past used Excel is post process milling engraving g codes to "around" a cylinder g codes..
As to your compound curves for pen handles...good luck..
Maybe consider ppnot a CNC lathe but an egg lathe...whole different hobby
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