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What did you do today? (2013)

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John Stevenson29/12/2013 23:25:43
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Ian,

Large gears are about 38mm, backlash won't be a problem as it's a slow moving shaft and always in one direction so a simple brake will do.

Final gears will be in steel and brass, the plastic is only a rough trial.

JasonB30/12/2013 14:14:05
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Finished the Galloway Cart.

J

Jeff Dayman30/12/2013 14:24:31
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Lovely job Jason, well done. JD

One of the holes on the frame is .000128" oversize though....

(just kidding, and taking cover!)

Nicholas Farr30/12/2013 14:29:47
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Hi Jason, as Jeff says nice job. I like the contrast between the yellow and the red.

Regards Nick.

Edited By Nicholas Farr on 30/12/2013 14:30:05

John Stevenson30/12/2013 14:45:46
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Your going to get 12 points on your licence with those tyres.............

Stub Mandrel30/12/2013 16:41:44
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Very neat. Makes the rough-hewn sled my Suffolk is on look a bit sickly...

Neil

Oompa Lumpa30/12/2013 16:59:53
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Well, not so much what I did today as more "what I learned". Learning is good, right?

I learned to keep my mouth shut and not gawp whilst milling because those flying bits of very hot material coming off the flycutter, well they will go anywhere!

Owwwwww!

Stub Mandrel30/12/2013 20:34:49
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I learnt not to guide drywall screws into plasterboard with my fingers. The darn Wickes screws left well over a dozen little steel splinters in my left index finger and thumb

Neil

JasonB30/12/2013 21:02:40
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The Knauf ones are like that too, I much prefer Gyproc or screwfix BZP ones and you don't get those nasty rust stains grinning through

Oompa Lumpa30/12/2013 21:15:11
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Posted by Stub Mandrel on 30/12/2013 20:34:49:

I learnt not to guide drywall screws into plasterboard with my fingers. The darn Wickes screws left well over a dozen little steel splinters in my left index finger and thumb

Neil

It's the cheap Chinese ones, I learned to buy the better quality ones long since

John Stevenson30/12/2013 22:21:16
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Posted by Oompa Lumpa on 30/12/2013 21:15:11:
Posted by Stub Mandrel on 30/12/2013 20:34:49:

I learnt not to guide drywall screws into plasterboard with my fingers. The darn Wickes screws left well over a dozen little steel splinters in my left index finger and thumb

Neil

It's the cheap Chinese ones, I learned to buy the better quality ones long since

No it's the cheap English ones who buy the even cheaper Chinese ones .............wink

Oompa Lumpa30/12/2013 23:20:33
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Very droll John, very droll!

Luke Graham31/12/2013 19:29:12
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Posted by jason udall on 29/12/2013 09:47:44:
Luke..you might find copper is not good choice for a coil former..eddy current loses...btw good luck with the rail gun

I did wonder about the copper, but in practice it works well enough for me.

I wouldn't bother building a rail gun, it wouldn't work as well as my air rifle anyway :D

It's for a solenoid valve to water my plants actually!

Michael Gilligan31/12/2013 20:16:55
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Spent some time trying to tidy the workshop this afternoon, and came across a Model Engineer "cover gift" from 1992.

"Andy Angle" ... came with Vol.169, No. 3930, 2-15 October 1992

Very clever little gadget ... I wonder if they still have the mould ?

MichaelG.

 

Edited By Michael Gilligan on 31/12/2013 20:18:10

Muzzer31/12/2013 20:23:47
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Posted by Luke Graham on 28/12/2013 23:40:44:

I've been doing electronics-oriented things over Christmas. I made a pen holder for the mill, which will hold a pen that can draw acid-resistant traces on copper circuit board. This means I don't need to use a UV light box or developer.

Never done it myself but apparently a common technique is to use a Dremel-type device to route out the copper from the PCB surface. This avoids the need for the nasty chemicals altogether and I suspect you may have problems getting a consistent flow of ink if you are using Dalo pens (from memory - do you still use them?).

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