Here is a list of all the postings pgk pgk has made in our forums. Click on a thread name to jump to the thread.
|Thread: Building Robinson Hot Air Engine|
Is it just me or does it say die filer to anyone else?
|Thread: Coronavirus death stats|
Were there a sudden and urgent need for milions of life-saving silver soldered copper boilers you can be certain that 20 expert engineers would argue as to the best approach to cutting, flanging and assembling them when things are critical. You can also be certain that whatever consistency they might arrive at would be screwed up by some poiliticians second cousin sourcing supplies of brass and german silver for them to be made from even before it was realised that there wasn't enough factory capacity - easily solved with a few emergency buildings despite not enough trained engineers to man them. Old engineers might be invited to come out of retirement but only if they first complete a dozen important courses such as radicalisation awareness, bridge building and road construction.
|Thread: Nitrogen as an Energy Store ...|
Gives detais on how it works and this statement:
|Thread: Metric to imperial|
..or a slide rule
.. or just draw a graph and laminate it
..modern folk use the calculator on their phone...
|Thread: Making a cast of a blind hole|
You can buy dental impression compounds on ebay.
There are all sorts of 2-part epoxy putties about so long as you use some form of release agent to stop it bonding and remove before fully cured.
Modelling clay might be enough too so long as you're gentle with the mesurements or 'fimo' which come in a whole slew of varieties and you can bake the impression to harden if you want to get fancy and cut it in half after.
|Thread: Odd thread|
a)...cut the thread outbound from headstock from a shoulder...
|Thread: Low temperature casting metal|
I filled some checks in a rustic style table using epoxy and metallic nail art filler - available in a huge range of colours if you're game to get away from B/W convention.
edit - another thought might be to 'leaf' if afterwards - faux gold leaf et al isn't too pricey
Edited By pgk pgk on 03/01/2021 14:31:26
|Thread: In anticipation of the New Year ...|
Reminiscent of the old story of the Texan bragging to the Irishman how it takes him 3 days to ride a horse around his ranch. The Irishman replies "I had a horse like that once"
There is a huge difference between a simulation of intelligence and the real thing. Pubs are a good observational platform.
My take on our overall death rate (from covid as opposed to failure to treat other things as well) is 3% but dropped to 2% currently with better approaches to therapy and assuming systems can cope. Vaccination arguments re only a single dose make maths difficult since the lower protection level and higher numbers protected will be confused by what R number that gives. In any event we have a history of failing to meet targets even if the vaccine availabilty improves.
|Thread: Change display font size?|
Crtl and + symbol together should enlarge the display in firefox
|Thread: Interesting wheel construction|
The spoke around half past 7 looks as though the end lump passed through the inner rim which would make life a whole lot easier?
|Thread: Retractable wheels etc for moving a Lathe ?|
25mm doesn't give enough room for a simple solution. Perhaps some air wedges to lift each end high enough to slide bogies under?
|Thread: Christmas Disasters!|
|Thread: Wheelchair design mystery|
Indeed. But you can bet future investors will have contracts that any such prize goes to company not individual...
|Thread: Rewiring Li ion battery|
I own most of them ..the original cordless drill/driver from 8 yrs ago still going strong on it's only battery. The 20v range generally not too bad... hedge trimmer runs slow but the blade is way better than the blades on my petrol versions so overall is superior. The pole saw is a bit pants due to the skip-chain but OK for minor use (grab the stihl petrol for major jobs but a heavy beast). Best is the reciprocating sabre/pruning saw - does a very decent job for pennies and so long as I'm working within walking range of a power source then 2 chargers and multiple packs works well. Worst is the cordless pressure washer - a complete waste of time - I get more pressure and volume from the hosepipe...
I'd be more concerned with the fact that there was a heap of batteries at half price. Past experience with half price rechargeable packs (from other sources) is that they tend to be old stock with a poor residual life (unless they still have a good lidl warranty)
|Thread: Wheelchair design mystery|
Perhaps i misread the original 2 articles but my intepretation was that the guy came up with a better wheelchair, started a company to make them and then got locked out of it. That's not uncommon.
The reality for most folk with a good idea and a wish to make/market it is that they need entrepreneurial finance and those guys aren't in the game to do you any favours - you do all the work setting up the business and unless you're essential for further developments or hold all the patents then businessmen will lock you out of the board and take over - altruism doesn't come into it.
I experienced the same thing when i came up with a unique way of dealing with my own profession. I made heaps of calls and had all the guys needed for the scheme lined up and keen on this new model but when it came to hunting up the loot to get the thing off the ground ( several million) it became abundantly clear that I'd be doing all the work setting it up but no way of guaranteeing I'd remain a part of it. To a degree you can understand it - these guys are risking their speculative cash.
|Thread: Flame resistant material|
Ceramic gasket material as used round flue access ports and wood burner door glass? 3mm thick
|Thread: Seen It All Now - Bah Humbug|
Indeed but like here most folk still live in popultion centres albeit smaller ones.
Nigel Graham 2
Czech biccy recipes are on-line - easy to do just a bit of a fiddle with the traditional shapes. I modified the recipes to make them vegan for OH
A pic from last year although this year I added to the varieties:
I can't avoid pointing out that while Sweden does have a higher Covid case number/population than us it also has a lower death rate/population.
As for christmas cards - just think how many are going to be stuck down with saliva.....
We send heaps of other stuff electronically so I see little difference in cards going the same way. A quick search for public domain christmas pics gives anyone without the artistry to create their own plenty of choice.
Want the latest issue of Model Engineer or Model Engineers' Workshop? Use our magazine locator links to find your nearest stockist!
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.