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

Member postings for oldvelo

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

Thread: garden tractor wheel lug nuts and studs
09/06/2020 02:34:56

Hi Ajax

I had problems too with accessing my albums Etc. The advice I recieved was to use the Icon No 6 on the second row of the posting window or as it advises Ctrl + K keys together.

Great interesting project looking forward to seeing it running.

Eric

Thread: Bird (feathered variety) expert(s) wanted.
30/05/2020 22:24:19

Hi

Last summer New Zealand we had Two hatchings of a Blackbirds family in a Hoya that grows on our front porch.

Both male and female feed the nestlings as long as it is daylight.

j-blackbirds.jpgo-bb-2.jpg

Thread: [Project 5] Low Profile Table Clamps
26/05/2020 08:55:45

Hi

Fly cutter with the tool stuck out flailing a large radius on a small width workpiece NBG on a gear drive train.

Keep the diameter of the cutting circle just a fraction wider than the job when flycutting to minimize the torque load on a chattering gear chain. Belt drive is infinitely smoother running on intermittent cutting

Three toolbits mounted on 52 mm cutting head will cut faster with one bit starting the cut and the previous one exits.

dscf0426.jpg

dscf0428.jpg

Setting up is a breeze take out the clamp bolt and fix the setup jig in its place to get all the tips equal by installing the toolbits to sit on the jig and do up the clamp screws.

Sharpen dull HSS tips with an oilstone for longer life and almost mirror finish.

Thread: Anyone made Myfordboy's powered hacksaw?
25/05/2020 01:55:07

Hi

This hacksaw has been in use for over ten years now with no problems. Hand hacksaw blades 18 TPI @ 50 to 95 strokes per minute with a rocking and oscillating cutting action that means that only a few teeth at a time in contact with the work.

Wobbly Hacksaw

Eric

Edited By oldvelo on 25/05/2020 01:57:02

Thread: Mount St. Helens
20/05/2020 22:18:18
Posted by Ady1 on 20/05/2020 14:05:37:
Posted by Neil Wyatt on 20/05/2020 12:15:26:

I remember seeing moving footage by a journalist who walked to safety through a literal hell of hot ash. He was convinced he wouldn't make it but kept going.

I can't find the footage.

Neil

The one I remember was some final pictures from someone who didn't make it as the ash flow approached at speed

David Johnston Lost his life in the pyroplastic gas flow his recording obviously survived.

St Helens Erruption Video

More in this link

Robert Landsburg

Eric

Edited By oldvelo on 20/05/2020 22:21:23

Thread: Cross slide dial calibrations - opinions sought.
16/05/2020 05:15:23

Possibly of use to someone reading this thread 2 mm pitch crossfeed screw with vernier scale on the static dial

to read in 0.01 mm increments with the Static Dial on the top.

Rotary dial has 40 divisions. Static dial has 44 divisions. Readings are on the work diameter trom right to left.imgp3352.jpg

Eric

Edited By oldvelo on 16/05/2020 05:18:29

Thread: Sharpening Files
15/05/2020 00:45:25
Posted by John Paton 1 on 14/05/2020 15:57:41:

Interesting stuff re 'sharpening'. Electrolytic with washing soda sounds worth a try as would be handy for controlled de-rusting of car parts too.

De rusting and removing paint or declogging files. The parts need to be connecteted to -- Negative terminal on the DC power supply and the sacrificial Piece to + positive

One of my many hobbies is restoring wood an metal working machinery and have used this technique on my projects successfully. You need to scrub the black oxidised layer from the job under running water. Then remove the water from the job with CRC WD40 etc to prevent immediate rusting if left to air dry.

Eric

 

Edited By oldvelo on 15/05/2020 01:35:37

Thread: "Mystery" Tool
14/05/2020 00:54:01
Posted by ALAN BUTTIGIEG on 13/05/2020 15:10:23:

I believe, someone, somewhere called it a 'spider''......

Physicaly handicapped spidersmiley

Thread: Sharpening Files
13/05/2020 18:02:12

Hi

No need for messy dangerous acid to sharpen files just use two or three table spoons of Washing Soda per gallon of water. The ratio is not critical but an excessive ammount of washing soda will NOT speed up the process.

Suspend the files in the solution hanging verticaly in the centre of a plastic bucket. Two pieces of steel on oposite sides of the bucket wired together.

A DC power supply from a battery charger connect the + positive to the files and -- Negative to the steel plates. Hydrogen gas will be produced by the process so adequate ventilation is required

Depending on the power of the DC supply will determine the time taken to restore the files.

Do NOT be tempted to speed up the process using a DC welder as it cause the solution to boil violently.

NO stainless steel to be used in the solution. Dispose of the solution by chucking it on the lawn it will kill mosses and lichens

Thread: Modern reversing switch
10/05/2020 21:22:26

A Single Phase motor must come to a stop be reverse curent applied or it will accelerate back up to speed and not reverse. Yes I have done it.

Thread: I Have a Plan/s (deep hole drilling)
10/05/2020 11:23:36

A technique I have used to drill the spindle on wood lathes is to have the hole started on centre in the metal working lathe. Then assemble the spindle in the wood lathe and drive with the motor on SLOW speed. A 6mm twist drill with an extension shank silver brazed on that is longer than the spindle length. Chuck the drill in a hand held electric drill on low speed. Back out often to clear the swarf and keep adding cutting oil. The pilot hole came out on centre. Then used 8.5mm extended shank drill to finished size. With the drill and work both rotating in opposite directions the drill stays on centre.

Thread: taper roller headstock adjustment
09/05/2020 09:24:05

Hi John

I got the 1 hp DC motor from an online auction it came from Factory sale that had converted their variable speed drives to VFD units. The control unit is a KB Electronics AC to DC speed control KBCC “R” SCR Drive “Relay Reversing” – Chassis bought from an electronics salvage and sale company. Great for cutting theads it can be set to run forwards slowly and reverse at high speed. From memory the setup was under $250 New Zealand some 15 years ago.

A tread mill motor is an option with a few shortcomings as the top speed is around 5000 RPM and being physically smaller that an industrial motor the torque tends to fall away at less than around 1200 RPM.

An AC to DC control unit with no reverse Link to Dc Control

Eric

Thread: Machine handles
09/05/2020 00:10:08

Hi Pete

Looks like an interesting project for a model engineer to fabricate your own or modify a bought one to an Enirod Handle.

A highly polished handle operated by normaly oily hands should not be a problem

Eric

Edited By oldvelo on 09/05/2020 00:14:14

Thread: taper roller headstock adjustment
08/05/2020 23:17:49

Hi John

Consider the Single Phase Motor may? be the problem

When you have completed all the above tasks. A similar problem with a second had lathe purchased a number of years ago I did extensive checks and adjustments. The gearbox ratlted loudly complete with chatter at most parts of the speed range. Ditched the AC Single Phase Motor notorius for running roughly. Then fitted a AC to DC Speed Control and now have quiet smooth running and cutting. So impressed fitted a variable DC motor for the power feed. Being able to adjust the feedrate on the fly for facing cuts well worth it.

Eric

Thread: Air supply to test run steam engine.
07/05/2020 21:13:02

Hi

I guess I am too late with this comment for Roger it may be of use to others. A repurposed refrigerator ran various small model engines successfully.

Thread: Quick setting nuts
06/05/2020 10:17:46

Hi Added this sketch of 12 mm Slip Nuts we fabricated and used to quickly remove machine guards

dscf2194.jpg

Thread: ANZACS - We will remember them!!
26/04/2020 23:06:10

Martin Dilly Get your jib down this is Brown's Yard. This thread is about Anzac Day Commemoration NOT a game of Political Football "Kia Kaha Arohanui Aotearoha".

26/04/2020 07:00:53

Anzac Day commemorates the Gallipoli Landing on 25th April 1915 2779 New Zealanders, about a sixth of all those who had landed on the peninsula lost their lives and 4,852 wounded.

Thread: Small skeletonised drill Press
07/04/2020 08:32:28
Posted by Steve Crow on 06/04/2020 18:26:41:

Ebay link

Words fail me.

Looks like a Black & Decker dril press. I doubt if you will find a hand drill to fit. My sister in law worked for B & D in the 50's on testing drills off the production line 40 hours of use and failure were very common.

Thread: Mystery machine..........
04/04/2020 21:59:14

Hi Morty

You have made a great job of the restoration on this one now a few things you may want to consider.

Teeth cutting on the pull stroke with the crank turning anticlockwise.

With power hacksaw blade fitted cutting thicker material use the weight as far from the crank as possible maybe even a little more weight on the blade lifting handle and reduce the load for thin material.

A drip feed of cutting oil on the blade will greatly extend the blade life.

Fit a large sheetmetal tray under the vice to catch the swarf and cutting oil.

Best possible place for a lockdown in a workshop Stay Safe

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
rapid Direct
Dreweatts
emcomachinetools
cowells
Eccentric July 5 2018
JD Metals
walker midge
Warco
Eccentric Engineering
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