What Did You Do Today (2016)

[Martin King 2Participant @martinking2]

Got a couple of small tool refurb jobs done today, new replacement steel part for a MONUMENT Plumb Bob:

and milled a large chunk of bronze into a new wedge for a nice French Coopers Spokeshave.

Used a new solid carbide 16mm cutter that came in a tool auction lot, what a joy to use! Got 6 of them in one smallbox at the botttom of a crate!

just distressed it a bit and roughed up the grip surface as metal wedges are more prone to slip than wood.

Cheers all,

Martin

[Martin King 2Participant @martinking2]

Missed the wedge pic!

[Neil WyattModerator @neilwyatt]

Posted by Keith Long on 26/11/2016 15:10:06:

Neil – sounds as if your about to embark on an exercise of "re-inventing the wheel" All the stuff you need is already available, go on to the Model Boats website and send a pm to Dave Milbourn. Tell him what your trying to do, he'll probably be able to quote you the module numbers that you need off the top of his head – he developed them.

So called tank steering using multiple motors is quite common in multi screw model boats with separate motors, either used alone or in conjunction with a rudder or rudders.

Why buy when I can make…? I thought we were all model engineers!

Neil

[Ian PParticipant @ianp]

Posted by Neil Wyatt on 26/11/2016 18:15:53:

Why buy when I can make…? I thought we were all model engineers!

Neil

I suppose it depends on what you call 'make'.

The tank mixers I have used were little more than an 8 pin PIC. You could make a PIC based one yourself but you would not go to the trouble of making the PIC itself (any more than you would cast and extrude your own brass bar).

I see nothing wrong in using a bought it part for the mixing, its only going to account for a small percentage of the whole project so completly ethical.

IanP

PS. I am sure I have seen mixer code posted online although using might take some of the fun out of doing it.

[Anonymous]

Posted by Neil Wyatt on 26/11/2016 18:15:53:

Why buy when I can make…? I thought we were all model engineers!

Steady on there, no need to be insulting; my cheque book is mortally offended!

Andrew

[Anonymous]

The VFD for the high speed spindle is now all wired up and installed on a convenient existng plate on the back of the CNC mill column:

I just need to make a bracket to clamp the spindle to the nose of the mill and I'll be in business.

Andrew

[Neil WyattModerator @neilwyatt]

Posted by Ian Phillips on 26/11/2016 19:21:43:

Posted by Neil Wyatt on 26/11/2016 18:15:53:

Why buy when I can make…? I thought we were all model engineers!

Neil

I suppose it depends on what you call 'make'.

The tank mixers I have used were little more than an 8 pin PIC. You could make a PIC based one yourself but you would not go to the trouble of making the PIC itself (any more than you would cast and extrude your own brass bar).

I see nothing wrong in using a bought it part for the mixing, its only going to account for a small percentage of the whole project so completly ethical.

IanP

PS. I am sure I have seen mixer code posted online although using might take some of the fun out of doing it.

I would not sully my workshop with a PIC! It will be AVR based, and therefore greatly superior!

Microcontrollers are as much one of my hobbies as model engineering and yes 99% of the fun is in writing the code.

Here's the thing itself (the extra roadwheel is about 37 years old, as is the gearbox).

More detail and pics here for anyone interested.

Neil

[jaCK HobsonParticipant @jackhobson50760]

Posted by JA on 25/11/2016 19:52:19:

Does NOX = Nitrous Oxide?

JA

It's the speak of the street bruv. NOx, NOS, Nitruz is all the same thing. And you knew it so it is probably more widely understood.

 

Posted by modeng2000 on 25/11/2016 20:05:32:

Do you know where to get the butane cylinders from?

John

 

I'm sure the JasonB thread I found suggested that you can refill the butane by opening the valve and using lighter refill can applied to the nozzle. I haven't tried.

Edited By jaCK Hobson on 26/11/2016 22:03:01

[Grizzly bearParticipant @grizzlybear]

Neil,

Visited your pictures.

Great pictures, Model railway, tanks and space shots.

Regards, Grizzly bear..

[Neil WyattModerator @neilwyatt]

Thanks GB.

[modeng2000Participant @modeng2000]

i must have missed that Jack, thanks.

John

[Mick HenshallParticipant @mickhenshall99321]

Er well yesterday actually, I have about 3 million carbon steel lathe tools inherited from my Gramps which have lain unused since 1982 so sorted about a dozen useful looking ones out which will get sharpened and tried out. I usually use hss tools as personally I do not get on with insert and carbide tooling, I understand that carbon steel gives a good finish but needs a bit more care when using them, I have sharpened and tried a couple of boring tools and am pleasd with the results, I am not knocking insert and carbide stuff but I do like the old ways of doing stuff and the time taken in grinding tools is well spent

Mick

[James AlfordParticipant @jamesalford67616]

Dragon Surgery.

I have been working on this structure for some time; hence the previous interest in propane-compressed air blow torches.

I spent ages finishing the front legs and showed my wife who promptly pointed out that one stuck out at an odd angle. Back into the workshop, roll it over and attack it with an angle grinder to amputate and reattach the leg; looked like a scene from some sort of medieval Gothic torture chamber. Once this basic structure is finished, I shall cover it in scales. I chopped off the tail as it was too cumbersome to move with it on. That will be attached later.

James

[Nick_GParticipant @nick_g]

.

In the workshop with my mate motorbike engine rebuilding.

He brought round a part for the turbo outlet that another friend of ours has welded. – I did not know you could do this. ………. Weld stainless to cast iron.! ?

Nick

[SillyOldDufferModerator @sillyoldduffer]

Posted by jaCK Hobson on 26/11/2016 22:00:45:

Posted by JA on 25/11/2016 19:52:19:

Does NOX = Nitrous Oxide?

JA

It's the speak of the street bruv. NOx, NOS, Nitruz is all the same thing. And you knew it so it is probably more widely understood.

Posted by modeng2000 on 25/11/2016 20:05:32:.

…

 

…

JA has a point doesn't he? In this case "the speak of the street" is very misleading. It's akin to that TV Programme that told us Wrought Iron is made by hammering Cast Iron.

I don't suppose it matters much if you always buy "NOX" from a reputable source who knows what you're using it for. A very different story if it "fell off the back of a lorry".

Dave

[duncan webster 1Participant @duncanwebster1]

Posted by Nick_G on 27/11/2016 10:29:17:

.

In the workshop with my mate motorbike engine rebuilding.

He brought round a part for the turbo outlet that another friend of ours has welded. – I did not know you could do this. ………. Weld stainless to cast iron.! ?

Nick

The only time I've come across successful cast iron welding they used nickel rods. I daresay nickel sticks to SS as well.

[jaCK HobsonParticipant @jackhobson50760]

Posted by SillyOldDuffer on 27/11/2016 11:22:28:

 

JA has a point doesn't he? In this case "the speak of the street" is very misleading. It's akin to that TV Programme that told us Wrought Iron is made by hammering Cast Iron.

I don't suppose it matters much if you always buy "NOX" from a reputable source who knows what you're using it for. A very different story if it "fell off the back of a lorry".

Dave

 

Yes. Both sides do. According to Wikipedia, NOx is everything but NOS. But I'm sure many people buying squirty cream refills do not know, or need to know, it is N20. I sometimes lean towars "if it is clear in context then just let it go" but othertimes their, there, they're, too, to, two annoys me.

Edited By jaCK Hobson on 27/11/2016 11:45:02

[SillyOldDufferModerator @sillyoldduffer]

Posted by jaCK Hobson on 27/11/2016 11:44:45:

Posted by SillyOldDuffer on 27/11/2016 11:22:28:

…

Yes. Both sides do. According to Wikipedia, NOx is everything but NOS. But I'm sure many people buying squirty cream refills do not know, or need to know, it is N20. I sometimes lean towars "if it is clear in context then just let it go" but othertimes their, there, they're, too, to, two annoys me.

Edited By jaCK Hobson on 27/11/2016 11:45:02

+1!

[Nick WheelerParticipant @nickwheeler]

NOS when applied to engine tuning is the name of the company that made N20 popular – Nitrous Oxide Systems. But it's become a catch-all term for the idea, a bit like Hoover for vacuum cleaners.

[MuzzerParticipant @muzzer]

In automotive industry, particularly relating to emissions, NOx refers to NO and NO2 which are both undesirable byproducts of combustion. They are acidic and corrosive and form nitrous and nitric acid when dissolved in water. Not something you'd choose to inhale even if you could buy it.

On da street, they are referring to nitrous oxide (aka laughing gas) as the stuff you put into your engine intake to boost output, ideally accompanied by additional fuel.

In da hood, it seems that today's yoof are buying the little metal containers that are sold for frothing cream. They also contain nitrous oxide and said yoof have discovered that inhaling it gives them a sort of legal high. So it's not unusual to find loads of empty containers where they have been partying. If you see a yoof buying dozens of them in a shop, it probably isn't planning to make lots of puffed cream.

[JAParticipant @ja]

If you look down an exhaust plume, let's say from a big diesel engine or gas turbine, and there is a hint or more of brown in the gas, that is nitrogen dioxide. Its real nasty is, environmentally, reacting with partially burnt hydrocarbons, again from combustion, in the presence of sunlight to form petrochemical smog.

JA

Edited By JA on 27/11/2016 13:23:21

[Alan Wood 4Participant @alanwood4]

Update on Nelly the Elephant ….. on good advice from one of the subscribers I duly gave her 4 coats of Wickes MDF primer (not sure this is any different to any other primer but whatever).

A few days later I painted the first grey gloss top coat using Wickes Exterior Gloss. As the weather outside was not too brilliant I did the job in the workshop. The paint was oil based but not really smelly.

Woke up next day with an unstable feeling stomach which quickly evolved into a very serious 'trouser clip' session. As management had eaten everything I had in the prior 24 hours I can only put it down to the paint fumes.

Anyone else had similar 'experiences' ?

Alan

[Neil WyattModerator @neilwyatt]

Surely N20 is just NOx where x=0.5?

> I spent ages finishing the front legs and showed my wife who promptly pointed out that one stuck out at an odd angle.

Critical to get your Dragon anatomically correct.

Neil

[Nick_GParticipant @nick_g]

Posted by duncan webster on 27/11/2016 11:36:58:

Posted by Nick_G on 27/11/2016 10:29:17:

.

In the workshop with my mate motorbike engine rebuilding.

He brought round a part for the turbo outlet that another friend of ours has welded. – I did not know you could do this. ………. Weld stainless to cast iron.! ?

Nick

The only time I've come across successful cast iron welding they used nickel rods. I daresay nickel sticks to SS as well.

.

Hi Duncan, Seems you are totally correct.

Spoke to the welder and the TIG weld filler rods were indeed nickle based.

Nick

[Ed DuffnerParticipant @edduffner79357]

Changed a crank oil seal on my SAAB which was leaking oil ( ~3 litres in 1 month) and as I understand it, crank case pressure also. Had to grind a bit of flat steel to wedge in between the starter ring and casing so I could undo the 27mm AF bolt holding the oil pump pulley on to get at the seal.

Ed.

[Author]

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