|103 forum posts|
It must be the season of drive failures, my pc has just decided that my data drive is missing luckily I back up hourly and 2 hourly to two different drives so minimum loss if the drive has indeed failed but it could just be windows telling porkies, there's another day tomorrow all untouched to look at it. Don't ask why I keep backups!!!!
|Neil Wyatt||10/09/2018 21:45:38|
15707 forum posts
I have three separate backups and never have more than two connected to the PC in case of ransomware attacks.
Years ago I put in place a policy that everyone should keep their files on a fileserver with RAID and regular automated backups with regular changes of backup sets.
Of course one staff member decided they wanted to keep all their precious data (years of it) safe on their own machine.
Guess whose hard disk drive died?
We also suffered a server crash once, virtually all the staff lost a few hour's work.
|Michael Gilligan||10/09/2018 22:06:47|
12784 forum posts
We had a very professional 'managed service' ... and only suffered one significant failure:
The RAID controller was 'bricked' whilst they were performing a firmware update
2904 forum posts
A few years back. my QNAP NAS (mirrored drive) failed and bricked both HDDs so I lost everything on them. Luckily I had periodically backed it up but I was still well pissed off. The root cause was the external PSU going West, corrupting the HDDs and/or controller as it gradually failed.
No excuse for not backing up. These days it is often just a case of plugging an external (pocket) drive in and it will do the rest automatically.
|David Taylor||11/09/2018 03:57:56|
126 forum posts
I did two things today. I cut some new nameplates for my freelance 5" gauge 0-4-0 because the ones I did before looked far too big when I went to put them on. Should have printed them out for a trial but I didn't have to loco home until last weekend.
The new nameplates gave me a chance to try holding the brass down on the MDF with masking tape and superglue. It worked well and held the brass flat. The superglue let go in a few places allowing a small amount of lift. On one plate this wasn't significant because it was off the end of the job and on the other I noticed it before I started so flooded some more glue in there and weighed it down for about 20 mins. I noticed a small unmachined fragment in the lower void of the 'E' after a coat of black paint so that needs cutting down manually later once the paint dries.
There was one exciting moment when I went to profile around the outside of the plate and forgot to change Cut2D's default feed units of mm/sec to mm/min! I'm assuming the table moved at it's max rate but the 2mm cutter didn't break... I was equally relieved and impressed. The finish was rubbish though.
The other thing I did was move the lathe off the wooden blocks and further away from the mill to re-open the passage between the two so I can get around them easily. The move went without incident this time. The lathe is still a bit unsteady at the tailstock end so that part of the stand is obviously not much good. When it was on the blocks I could just move one of the two tailstock end blocks by hand with no resistance.
I think some adjustable feet might be a project in the near future unless the batch of brake parts I make on it soon come out ok, in which case I'll leave it alone. I really hate working on the machines or tooling rather than the project or loco I'm trying to build.
That was actually all yesterday. Today I am going to fix that little unmachined bit on the nameplates, fix a piece of plywood to the bottom of a tool cabinet that is of such appalling quality the castors screws simply pulled out while moving it around (don't but tool cabinets via eBay!), and perhaps making a start on the CAM for the weight reduction pocketing of the sandboxes I made last week. It would be quicker to do it manually but I need to learn to use my new machine for something other than faux-cast plaques.
|David Taylor||11/09/2018 04:01:12|
126 forum posts
I feel for you Mark. It's always a shame breaking a larger cutter. As long as the job's not ruined things could be worse.
306 forum posts
I had a computer monitor failure yesterday. New SOTA thing arriving today, plus replacement electrolytic capacitors for the old one. In my experience a dead monitor is nearly always a dried out electrolytic and at £3.22 for a complete new set I have to try.
|103 forum posts|
Well I'm all smiles again as I turned on the pc and all is well. Ran several tests on the drive with nothing untoward showing, it looks like I'm getting due to a windows reinstall. When are they going to produce an operating system that's reliable. There's also no point in considering Apple or Linux as some of my software is windows only. B*##!y Bill Gates
|Mark Rand||11/09/2018 13:54:42|
|664 forum posts|
To be fair, most of the problems with windows tend to be caused by additional software and drivers. Those that aren't tend to get patched for free, and the number and frequency of patches is comparable to those of other operating systems.
I'm not seeing windows through rose tinted spectacles, I ran up to 6 dialects of unix since 1982, windows since 1996 and linux since 1998 at work and home and the latter two at home since leaving work in 2016.
Edited By Mark Rand on 11/09/2018 13:55:43
|Mark Rand||11/09/2018 14:18:11|
|664 forum posts||
I found two sources of problems and have applied appropriate slapping upside of my head!
What I thought was a radius on the roughing endmill was where it had been run into something hard before I 'rescued' it from work. That made it run hot and rough (wasn't cutting at all on the corners). Even that wasn't a significant cause of problems or the inability to climb mill:- I went around this morning, after finding another endmill, to check that everything was adjusted properly. Tightened the bolts on the ram, head and pedestal and went to set up the first cut. Then I realised that the table was pivoting as I moved it in the Y axis! The gib screws had all worked lose by a half-3/4 of a turn. Since there's very little play on the feed screws (adjustable backlash), I've got into the habit of not bothering to lock the unused axes...
Adjusted everything and it's not working like it should be. The lesson was probably worth wrecking the milling cutters, just to make me remember next time.
And below is why climb cutting is nice and why roughers are nice. No recurring of chips and nice safe 6's/9's type chips rather than lethal splinters:-
|Brian H||11/09/2018 20:09:58|
1051 forum posts
I finally finished the water tank for my Burrell-Boydell engine today. It is made from 1/16" brass sheet with brass angles and reinforcements for the pumps inside, and no end of 1/16" diameter snap head rivets followed by soft solder to seal any gaps. There are four pumps to be fitted, one each side for filling the tank, one on the RH side, worked from the boiler filling pump, to feed the boiler and, with luck, another pump on the rear, worked by hand to fill the boiler and to provide back up to the engine driven pump. I say with luck because the ram will need to be horizontal to fit in the space but I'm hoping that a nitrile ball and a soft spring will work.
|David T||13/09/2018 19:59:55|
|71 forum posts|
Made a thumb nut
|Mark Rand||13/09/2018 22:57:17|
|664 forum posts|
Nice. Did you mill the 'serrations' or drill them before turning the diameter down?
|David T||14/09/2018 08:06:19|
|71 forum posts|
Thanks Mark. I milled the serrations by clamping the stock vertically on the rotary table (or BCA table in my case), and plunging with a slot drill. Then back on the lathe to clean up the diameter and part off.
(Apologies for the wonky photo)
|74 forum posts|
Nice work David!
I think I’ll make a couple those to replace some knurled ones which really don’t have enough grip.
|Ian P||14/09/2018 09:31:27|
2050 forum posts
|Ian S C||14/09/2018 13:31:00|
7262 forum posts
Spent the morning yesterday making handles for woodturning tools, it's a while since I did any wood turning. I then made the tools.
Ian S C
713 forum posts
Got the cam follower radius aid finished and had used a recently bought Vertex 6" rotary table with a Myford 3 jaw chuck on it to machine a non critical dimension.
I knew the chuck was a couple of thou out but would not be too important for what I was doing
Found the 2 Morse taper chuck holder was out as well this was bought with the new table.
Chuck register 0.0015" small and when turned in Myford headstock 0.004" on DTI checked a genuine old 2 MT chuck holder and DTI hardly moved.
When I first saw this holder I was suspicious as it was shiny (all that glitters is not gold)
Good job when using the table to machine my cams it was on a home made 2 MT holder.
Some of these tool accessories today are not always accurately made an ER collet chuck bought some years ago had to be replaced as thread was very undersize.
I know industrial tooling is very expensive compared to hobby stuff but still should not to out of accuracy by as much as the chuck holder.
A lesson learnt if possible check if running true with DTI etc. new accessories.
Edited By Windy on 14/09/2018 20:40:39
713 forum posts
Machined radius on test piece cam follower with a carbide cutter will try the Alexander grinder on it tomorrow with a light skim.
I put a test bar in the chuck first and found the jaws need truing as slightly tapered another grinding job.
So used an ER collet chuck I had modified to fit the Myford thread to hold the follower radius aid.
As a first attempt to Tig stellite apart from an inclusion probably a bit of tungsten electrode when I touched with electrode it 's better than I thought it would be.
So this weekend 3 blanks to build up with stellite after have been to see record attempts at Elvington.
A French World record attempt contender will be there with a custom 500cc bike.
|David Taylor||18/09/2018 11:16:31|
126 forum posts
Over the last few days I got that piece of wood on the bottom of the toolbox, made the front and mid brake hanger pedestals and bottom cross bars, and rounded over the corners of the sandboxes. The photo of the sandboxes shows one straight off the machine and the other one after about 10 mins with the sandpaper. The ends of the sandboxes look rough because they were done with a roughing end mill.
The rounding over was done with a 12mm end mill as I don't have any corner rounding end mills.
This thread is closed.
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.