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Member postings for jason udall

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: You tube videos of entertainment if not informative
29/03/2019 19:03:29

Here's another quirky YouTube video

https://youtu.be/7DZc94SBF0g

This guy is fun

Skilled

Bonkers but definitely fun

Thread: Metal ball joints for 1/3 scale action figure?
15/03/2019 15:50:04

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
06/03/2019 19:46:02

Err just checking....when you inverse tool.....did you check tool height.... don't ask

Thread: Precision division plates
06/03/2019 19:31:05

Interesting

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
24/01/2019 17:58:25

Just be clear
The chap is Pablo Cimadevila Alvarez

I don't know where the link to Sebastian Rodreguez Veloso posted by jon laws came from but maybe the comments about dodgy past need review/moderation

Mods Edit. Posts about the wrong man have been removed.

 

Edited By JasonB on 24/01/2019 18:35:44

24/01/2019 17:51:57
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...
21/01/2019 15:42:51

Speedy Builder...

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

21/01/2019 11:38:20
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.
20/01/2019 22:34:09

https://youtu.be/MgnlbDVuPdg
Accomplished jeweler makes ring out off two brass nuts...
Watch to end for "Why"
As assure this jeweler has some kit (other videos) to kill for. .laser welding/engraving

Edited By JasonB on 21/01/2019 12:15:51

Thread: PLA not Sticking to Bed
02/01/2019 16:33:37
I use"pritt" stick other brands available and also work

Thread: Horn Antenna for Radio Astronomy
03/12/2018 19:03:48
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
03/12/2018 18:33:35
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?
05/10/2018 21:34:01
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
26/08/2018 22:05:55
I know it's obvious but check your drill shank is the desired size ....
Thread: Tool i/d and Mitutoyo vernier advice please.
24/08/2018 18:05:08
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...
23/07/2018 18:21:37
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?
08/07/2018 16:25:27
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
13/05/2018 23:56:11
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
Thread: 'Why Projects Fail ...'
06/02/2018 21:55:44
Why dp projects fail?

The aforementioned law zero incomplete definition of target

To mention one infamous project
.project DEEP THOUGH. .purpose. .to calculate the answer to the question Life the universe and everything
..just look how that turned out
Thread: Channel 4 (UK) tonight Sunday Jan 7
09/01/2018 07:17:49


"Great to see the initial failures not being hidden from the cameras and I expect to see tantrums, resignations and huge arguments in the following episodes"
And how dull for the telly viewer would a carefully planned and executed build have been...no "drama" no "jepody"
This is not tv made for the likes of us ( what would be... we are generally in our sheds not watching telly)..its made for the mass audience with a hint at model train enthusiasts

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