Member postings for Jeff Dayman

Jason's suggestion of a tube wrench with two lugs will grip the ring nut in the OP's picture better than a pin spanner. Easy to make from scrap tube, too, and cheap as chips. A cross drilled hole at the other end, to fit a stout round bar, gives a simple way to drive the wrench with high torque.

Just in case you still want one though, the tool is called an adjustable pin spanner, seen at link below. Very good for use on nuts with drilled holes in the nut face, like the seal holding nuts in the wheel hubs on many 1970's Japanese motorbikes.

https://www.mcmaster.com/spanner-wrenches/adjustable-pin-spanner-wrenches-for-holes-on-the-face-8/

Just my opinion Bob, but I don't think having the firebox inner and outer shell meet at a sharp junction with no foundation ring is a good idea. Depending on the water you use, there may be a lot of sediment buildup at the lower end of the boiler. If it is a small space tapering to a point, it will fill quickly and you may get plate overheating if there isn't water between the shell and firebox inner because the space is full of sediment. A foundation ring provides a) a water space to keep plates cool / transfer heat, b) a wide ledge for sediment to fall on, and be shifted / blown off during blowdown. Food for thought.

Edited By Jeff Dayman on 08/04/2021 19:31:49

50 mm wood balls are available on Aliexpress (China import). Search their site for "Wooden balls without bore Dia. 50mm/60mm/70mm/80mm"

They may have plastic ones too, acetal would be a good material choice if they have the dia you need in acetal, but probably a lot more money than wood balls.

If you use wood balls I suggest multiple dips in melted wax to seal them, this will have minimal chance of leaching bad chemical pollution into water as varnish/chemical wood sealer might.

Looks like a great start!

Seen lots of mills with wear causing table movement at either extreme, but never seen one with the table having actual curvature as the sag stories state.

The mills with the widest knees / longest knees generally show least deflection due to wear.

+1 on making a metal replacement. To re-use the original nut, a washer or disc of same material as delivery tube could be found or turned on the lathe, to fit the inside dim of the nut. Make the disc ID a close clearance fit to the delivery tube. Silver solder or bronze weld tube to disc, bend tube along the length or at tip to suitable jaunty angle , and there you are. The outer end of the tube could be peened over to make a smaller ID delivery nozzle if some more energetic squirting is needed.

Copper tube, brass tube, or any sort of brake line out of a car would all make good delivery tubes.

Wise to check hole in disc and tube are open after solder / braze op.

Edited By Jeff Dayman on 05/04/2021 22:51:48

Timely read at link below, a CBC report "surveillance capitalism".

https://www.cbc.ca/radio/ideas/surveillance-capitalism-who-is-watching-us-online-and-why-1.5791546

Some ideas which have worked for me in similar device to computer issues:

-check that the printer is still seeing your network

-reboot the computer the wifi is run by, or boot the internet modem if using one.

-shut the printer scanner down, wait 30 sec, power back up.

-connect a USB cable between PC and scanner/printer and see if the scanner will work with that.

Hope this helps. Sorry if it is all obvious to you or has already been tried.

Edited By Jeff Dayman on 03/04/2021 00:07:38

Edited By Jeff Dayman on 03/04/2021 00:07:57

You might try simply adding some plastic or aluminum spacers between the large metal mass of the machine and he scale, and use longer mounting screws. Distance to metal masses can affect readings in capacitive sensors.

Nylon or acetal spacers would probably affect readings less than PVC spacers, just FYI, PVC has affected capacitance in several linear measurement instruments I have worked on in the day job. Its' presence changed the dielectric constant in the sensor and caused the readings to be larger than they actually were. Nylon or acetal has less effect.

Edited By Jeff Dayman on 02/04/2021 21:19:49

The practice shown in the drawing in Nick's post may have had more to do with magazine publishing of the time than general engineering practice. LBSC may have had some editorial pressure to produce more bang for the buck and get more data for a wider audience on fewer costly pages. In different biographical accounts of LBSC there are some references to his interactions with the editors of various magazines he wrote for.

I personally would find it distracting to work to such drawings but as Hopper said you soon work out which set of dims is the one for your gauge / scale. It would not take long to circle the pertinent dims on each drawing as you went, or maybe make your own dimensioned sketch. This is akin to making your own CAD files these days to weed out as many errors as possible from long-published model engineering drawings still circulating.

As to fractions, I expect LBSC wrote to the wider audience of working people and trades people as well as the aristocracy of the time. The average guy could probably afford a fractional 6" steel rule but maybe not a micrometer or a slide rule to do decimal conversions. LBSC also published instructions to use commonly available items as substitutes for costly engineering tools - like setting valves to "the thickness of a tram ticket" spacing, or "use a bicycle spoke". His main point was that anyone could build a people hauling live steam locomotive if they really wanted to, and his articles were intended to teach anyone of any social position (that could afford the magazines he published in, that is) to do it.

Never heard of a prive on a lathe, but I don't speak French, either. Maybe they meant "drive" meaning the drive system - motor, belts, gears, type of motor control, etc.

You know, in the pic where you have the red shirt on, it looks like a Guzzi or Honda CX500 V twin might fit under the seat......

Or maybe a rocket nozzle......

In case you were thinking of taking up that sort of smoking again!

Just joking. Glad you had a good day.

Bob, Mr Werner Schleidt in Germany has built the Fire King and has several videos of it running well posted on this site. Maybe you could contact him and ask about his boiler's construction / which plans he used / materials. He has done one, and would have recommendations I am sure.

Short explanation - yes the 8.8 and 12.9 numbers are the strength rating. 8.8 is a medium strength screw and 12.9 is a high strength screw.

Low head metric capscrews are often but not always made to DIN 7984 standard. DIN standards are the same worldwide, obviously, but fastener makers do sometimes deviate from them when it suits them, particularly some less virtuous Asian makers, so unless a particular fastener from a reputable distributor is stated as being made to DIN XXXX it may not be.

If I were OP I would stop looking at Ebay for fastener engineering info and instead look at manufacturer's or distributor's datasheets. A handy and free resource is McMaster Carr in the US. You don't have to buy from them but you can look at data on just about any fastener, in detail, on their website. If you click on a part number all specs and a product drawing appear.

Example at link below for low head socket head capscrew.

https://www.mcmaster.com/93070A123/

Enjoy yourself Windy! Look forward to pics if you are allowed.

Looking great Robin! well done.

My toaster does that now, and it wasn't advertised as digital........

Dyson digital motor is marketing verbage. Digital motor control, sure. Digital motor is BS.

In my opinion Dyson = cheap junk from Asia + marketing BS

Not me, I already get a barrage of marketing ads triggered by my internet browsing, don't need more. The alexa / siri devices are just data collection / marketing tools. The less I have to do with AI the better, but it is becoming unavoidable if you interact with companies or government at all. Just my opinion.

Looking great Ron, I'll bet you can't wait to take it for a run, Hope that is possible soon.

There is no privacy on phones or internet either wireless or land network. NSA in the states, and several other agencies, are listening with AI for keywords about crime and terrorism, and have been for years now. 99.5% of the population have absolutely nothing to fear from this, although feelings about privacy may be hurt in the sensitive. Go have some fun in the workshop and stop worrying.

Oh, and good morning to Fred and Bob at the NSA!