By continuing to use this site, you agree to our use of cookies. Find out more

Member postings for Jeff Dayman

Here is a list of all the postings Jeff Dayman has made in our forums. Click on a thread name to jump to the thread.

Thread: Bassett-Lowke
15/04/2021 14:52:47

Any building toy that gets kids making / putting together something is great. But-

Marketing it under a name from the past like Bassett Lowke is in my opinion a cheap marketing trick aimed at grandparents / great-grandparents who might recognize the old firm's name / recall their quality while buying toys for little kids. The toys shown have no relation to the original firm's product or scope, it's just more mass market injection moulded toy products.

Thread: First try with a 3D printer
14/04/2021 19:06:48

Great looking thread protector!

Note re frogs and boat prints - great for testing hydraulic presses.......gets em flatter than p*$$ on a plate.

Thread: Cleaning a tacho glass
12/04/2021 16:42:39

Years ago I did take the speedo and tach apart on a 1972 Honda 350 K2 I had. The front and rear halves of each were held together by a polished aluminum band rolled or pressed to a C shape to permanently assemble the units. A rubber gasket was compressed between front and rear halves of the steel shell. I got the speedo and tach housing shells apart by cutting the aluminum band. After cleaning the internals, repainting the faces and cleaning the glass (real glass, in those units, luckily) I drilled tiny holes in the aluminum band, put a dab of silicone sealant at the join, and wired the band ends together with some small dia copper wire. The wire and the join was placed where it would not be visible, under the units toward the steering stem. Worked for many years afterward.

Bear in mind both meters worked fine before, they were not corroded inside at all. The reason for disassembly was the paint on the faces was completely sun faded to the point you could not read the faces at all. Lots of condensation marks on the inside of the glass too.

Hope the disassy info is useful, if your gauges are fastened with a band as mine were.

Thread: Bandsaw - wood and metal ?
11/04/2021 12:44:44

For many years now I have been using a steel framed woodworking bandsaw modified for blade speed of 150 fpm an using an HSS bimetal blade. This saw cuts steel or other metals as well as wood with excellent results.

Typically woodwork machines run many times faster than 150 fpm and have lighter blades and lighter frames, not suitable for metal cutting. However If you can find a woodworking saw that can be modified to run at 150 fpm and having a steel frame, it may work fine. Otherwise look for a metalworking saw.

You may also be able to find an inexpensive Chinese import handheld portable metalworking bandsaw, which you could use handheld of course but it could be mounted to a bench frame and a table fitted to it if need be.

Edited By Jeff Dayman on 11/04/2021 12:45:54

Thread: Help needed with identifying a tool
09/04/2021 16:41:35
Posted by DC31k on 09/04/2021 15:16:40:
Posted by Jeff Dayman on 09/04/2021 14:29:11:

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...

Would you kindly postulate a mechanism whereby the round pins on the spanner to which you refer will fit without slippage in the square or rectangular cut outs in the nut the OP shows in his photograph. Thanks.

a) if the pins on the spanner are small enough they will engage the sides if the slots in the nut.

b) grind the pin side to a half round shape with flat parallel to the nut slot side face. After the grinding the wrench can be used on slots or on holes, although pin strength will be slightly reduced. Certainly not a perfect tool for the job, but for a one off or infrequent operation, you do what you need to.

As I said, Jason's tube wrench with lugs is the preferable way to do it.

09/04/2021 14:29:11

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/

Thread: How on earth do I build this boiler for my Fire King ?
08/04/2021 19:29:46

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

Thread: Source of 2 inch balls for water pump
08/04/2021 14:30:25

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.

Thread: Java 0-4-2 O+K De Maas Sugar Mill Locomotive
06/04/2021 12:33:38

Looks like a great start!

Thread: Milling Vice Location
05/04/2021 23:41:04

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.

Thread: Replacment oil can spout
05/04/2021 22:51:07

+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

Thread: Are we being listened to on the phone
05/04/2021 20:52:58

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

Thread: Canon printer
03/04/2021 00:07:23

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

Thread: Tyre Guage DRO - capacitance issues?
02/04/2021 21:16:09

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

Thread: Multi-dimensioned Drawings
01/04/2021 15:23:44

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.

Thread: Armadeal lathe
30/03/2021 16:28:51

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.

Thread: A new job
30/03/2021 12:42:24

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.

Thread: How on earth do I build this boiler for my Fire King ?
29/03/2021 17:02:42

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.

Thread: Low head Cap Screws
28/03/2021 13:44:17

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/

Thread: A new job
28/03/2021 13:25:31

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

Magazine Locator

Want the latest issue of Model Engineer or Model Engineers' Workshop? Use our magazine locator links to find your nearest stockist!

Find Model Engineer & Model Engineers' Workshop

Latest Forum Posts
Support Our Partners
cowells
Rapid RC
Eccentric July 5 2018
Eccentric Engineering
Dreweatts
Subscription Offer

Latest "For Sale" Ads
Latest "Wanted" Ads
Get In Touch!

Do you want to contact the Model Engineer and Model Engineers' Workshop team?

You can contact us by phone, mail or email about the magazines including becoming a contributor, submitting reader's letters or making queries about articles. You can also get in touch about this website, advertising or other general issues.

Click THIS LINK for full contact details.

For subscription issues please see THIS LINK.

Digital Back Issues

Social Media online

'Like' us on Facebook
Follow us on Facebook

Follow us on Twitter
 Twitter Logo

Pin us on Pinterest