Member postings for Ady1

The fantasy versus the reality.

I'm glad to see the government winding back the Nut Zero rhetoric a bit, Maggie Thatcher did a good job of massively reducing our carbon footprint by outsourcing most industrial capacity

The real issues now are places like China and the USA

Last week China burned 100,000,000 tons of coal

This week China is burning 100,000,000 tons of coal

The UK is almost insignificant at a global pollution level

As for the "climate" well we're 2 days out of July here and it's October in Scotland today, omg it's horrible

Alibre Atom is for basic CAD work on a basic computer, my own unit is a 2008 Windows 7 unit

Total cost 250, plus 50 for a decent graphics card

Are you by any remote chance showing us what £2000 of CAD on a workstation costing thousands can do?

Just one of those bevel gears would have my poor computer stuttering to keep up

When a machine fires into life it sometimes has pretty goofy settings so zero your xyz

Also zero your xyz at the start and end of any gcode routines as a housekeeping habit (unless its impractical)

Expensive tools can be like expensive kitchenware or furniture

The fancy stuff is more likely to hold its price when you come to sell

"its an ercol" or "its a mitutoyu"

Plus it's nice when you get to use it for a few years

Nasa has lost contact with its Voyager 2 probe billions of miles away from Earth after sending it the wrong command

it hopes communication will resume when the probe is due to reset in October.

**LINK**

I cut up to an inch (25mm) with the grinder by using 115mm blue spot stainless discs 1mm

Edited By Ady1 on 01/08/2023 13:40:29

The cutter gets support along 85% of its length, only the business end is unsupported

I've been looking at trying it out myself after the other 307 jobs are done but it's at the precision end of the spectrum to get it right and Ady the bodger lacks time

Tapering the hole slightly may also help, drill it through with 0.9 and drill the rear half with 1.0, again time and precision required, and a good drill set

Edited By Ady1 on 01/08/2023 10:21:18

Would a support collar give you more luck, a tube with a lengthways slot

So a 4mm collet has a 4mm collar with a 1mm hole

The collar extends to the last 1.5mm of the cutter

Edited By Ady1 on 01/08/2023 10:10:32

That's ok Nigel I've got plenty to keep me going atm

The picture you posted looks fine btw

When you feel more ready then kick off a thread and I'll join you in doing it

some bits in the plan I'm not so sure about but the way it works is you just keep plugging in the parts and the eureka stuff happens as it comes together

As for yourself just keep doing the lego stuff until you want to do simple plans, and its at that point that your wheels start leaving the runway tarmac behind

Edited By Ady1 on 01/08/2023 00:38:24

If you're getting more confident we need to do a few Model Engineer scale drawings

Nothing fancy, just homework type stuff to build confidence

There's a relatively simple plan here that is available to all

https://www.model-engineer.co.uk/news/article/free-plan-cross-vice-to-vertical-slide/22255

name a separate folder

create a master-imperial PART file (I use 64ths but 1/16ths will do most bits)

Draw up the parts apart from the acme thread, just make that part as a shaft

I'll do the same thing

Don't do any threads, just shafts and holes

Do each part in its own file (from the master imperial) and name it like it is in the plan

They all get dumped into assembly once they've been drawn

This exercise forces us to be disciplined and logical, there's no short cuts during the familiarisation process and being happy with drawing out plans is an essential step

And start your file with the easy parts, don't start with the awkward ones

Edited By Ady1 on 31/07/2023 10:23:36

It's the keyboard command near HOME

PrintScreenSysRq

Then paste it into paint and save-as a jpg

I tend to put them in my downloads folder since it already gets used by my browser

and don't worry about having red bits like constraint issues or the like when you post up your work

These things give us clues as to what pointers will work best to get you going on the path to nirvana

You've put a lot of time in to getting this far

If you're still struggling with constraints just play with 2 and 3 part assemblies as you would with lego

An awful lot of the learning process is experimenting and manipulating bits until you start getting the bigger picture

Going straight into a defined project is the hardest learning route imaginable, you must be comfortable with the basics first

I tend to use the long route to reduce the chance of a pooter crash with bigger assemblies, there can be an awful lot going on and I get nervous

Shut down the assembly,

edit the original sketch/extrusion part.

re-open the assembly

I also do periodic backups of the assembly (assemblybak)

RE: your missing holes

If you go back to the original part you may find it has not been regenerated to the final feature and the holes are actually still there. Alibre drawings will save without all the features re-generated after an edit... argh

Yet another Alibre sneaky to watch for, been caught by that one a few times when I get absorbed with a project

(There may be a tick box option somewhere that forces 100% regeneration upon saving a file)

Edited By Ady1 on 30/07/2023 23:59:17

If we assume assembly you can either redo the shaft in the original drawing or edit it in situ

Editing the shaft in situ

The assembly editor is a bit of a pain because it splits the main bits we need

Then right-click edit the shaft sketch or extrusion

To go back to assembly click on root assembly

When you go to save it shows you the spindle update you did as an over write

Edited By Ady1 on 30/07/2023 23:50:00

Is it the assembly or a drawing

You have deleted every possible piece of useful information to post that jpg

Edited By Ady1 on 30/07/2023 23:11:32

I think I would open out the bottom for better access, insert a piece of square hss crossways or a round drift, then shove it out with the jack

Put the pressure on then leave it for a while, like with a balljoint, coax it out with some hammer dinging and an aluminium protector

Got to support the flat part though, cast iron no likey tension, only compression

Put a plug in afterwards? if you want to

With that 12 ton setup you must be half way there

Edited By Ady1 on 30/07/2023 14:37:35

bumpy wumpy

They work pretty hard so after 20 years it's probbly motor related

A nice job.

ooh la la