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Member postings for Bandersnatch

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

Thread: Nozzle Bores
04/07/2020 01:06:13

Here's something that I had recently. This was on a generally reliable machine with material (PLA) that has been good. (It's all supposed to be a single column). I hadn't expected trouble so I printed it again without changes. Exactly the same result.

When I investigated, I found that, instead of my normal, ubiquitous, 0.4 mm nozzle, I had installed a 0.3 mm nozzle in error. The slicer (Prusa) was set for a 0.4 mm nozzle.

I fitted a 0.4 mm nozzle, ran it again and the print was fine. (I could kick myself that I didn't leave the 0.3 mm nozzle in place and change the Prusa setting to match it).

wrong nozzle.jpg

02/07/2020 21:44:42

Martin, I don't doubt there may be some spreading effect of the plastic but it wouldn't make sense for every nozzle manufacture to apply his own correction to the hole diameter if needed. Much better to drill the nozzle to nominal so that everyone is doing the same thing and have any correcting done in the slicer software. It's always referred to as "nozzle dia/size"

In any event I checked a number of nozzles today and all looked a bit small so I tried running a #79 drill through by hand. It went through quite easily and left me with a nice clean (and round) hole.

CE - this whole thing kicked off because I was dissatisfied with the print quality on one machine .

02/07/2020 01:25:28

I do know what it's like to run a .3 mm nozzle (by misteak) with gcode sliced for a 0.4 nozzle and the result ain't pretty.

(The video seems to be the kind Neil's complaining about so it may not last long).

Edited By Bandersnatch on 02/07/2020 01:29:57

01/07/2020 22:29:09

I didn't (difficult to do plus I never thought of it) XD.

However my quick calculation on the back of a tear-off from my Dilbert daily calender came up with 0.0015mm as the expansion of a 0.4mm hole over a 200 ºC temp range.

Not that I'm very good at those calculations any more (another sign) so feel free to correct me.

I don't think that's what I'm seeing. I'll look for a very small drill tomorrow and if I find one I'll run it through a nozzle and see if it resizes it - and if so, see if it make any practical difference to the printing (with Cura set to its current value of 0.4 mm).

Edited By Bandersnatch on 01/07/2020 22:29:54

Thread: Macro-photography
01/07/2020 22:10:26

Yeah ... you're right Nick. I did think of selecting the but and just sharpening that but I think it would look a bit artificial with this picture.

Thread: Nozzle Bores
01/07/2020 19:01:00

OOPs! Sorry ladies and gents. What I took to be a #80 drill was actually a #60. Failing eyesight ... symptom of current lack of infinity-breaks.

I can't find a #80 but the optical comparator info would still seem to apply.

Thread: Macro-photography
01/07/2020 18:35:43

Just out of curiosity, I took one of Nick's images and sharpened (the lightness layer only) in old PSP.

Whadaya think. I did use quite a lot of sharpening since I was only doing it to the lightness layer not the total image but I may have overdone it a little.

ickfarr image.jpg

Thread: Nozzle Bores
01/07/2020 17:26:48

I recently purchase some 0.4mm nozzles thus.

The ones I was sent were similar to thus.

I have plenty of the latter which I can manage with but are longer and not really ideal in my situation. hence the order for the shorter ones.

When I looked at these, it seemed to me that the bore looked considerably less than 0.4 mm. A check with a B&L Optical Comparator indicated more like 0.3 mm or even a bit less.

A #80 drill .34 mm wouldn't touch it.

However, every other 0.4mm nozzle that I have around (of various types) seems to be the same so it doesn't seem to be a case of mis-marking on this particular batch.

Am I missing something?

Edited By Bandersnatch on 01/07/2020 17:27:35

Thread: Yipee the F1 is back on
29/06/2020 17:25:19

As usual I think I'm running counter to prevailing opinion but to me what's wrong with F1 is trying to make it "exciting" to the fans by all kinds of artificial stimuli. That, and playing to the mini-teams by limiting the others in terms of costs.

I'd rather see it as in days of yore, when it was considered a sport rather than an "entertainment". Wide open, do as you like (within reasonable constraints); spend what you like; test/develop as you like, when you like; pit activity at teams' discretion. And may the best car/driver win.

I've followed F1 since the 50's but I only watched maybe a quarter of the races last year. I likely would have watched fewer or none this year, CV notwithstanding.

Now they want to use it as a vehicle (sorry) on the current social-change bandwagon.

Thread: Printing from Digital Archive
28/06/2020 17:32:25
Posted by Circlip on 28/06/2020 09:49:13:

And can you also post instructions on a subject that too many find impossible, the correct orientation of photos. Gets tiresome turning the screen sideways or upside down.

If you have Meniere's and a fixed monitor, you don't turn anything sideways .... you just move on.

Other than that my personal pet peeves are: misuse of the message quoting system and people who prepare messages/responses separately in an editor, then paste them using tiny fonts. (And yes, I do know how to enlarge print on my screen but why should I do the work if the poster can't be bothered?).

Thread: Need to know about iPad 'air'
26/06/2020 01:24:53

oops! laugh

Thread: Making a Nikon P1000 stable to be able to take moon & star shots
25/06/2020 22:32:41

Wonder if any of the massive, wooden tripods that were available from war-surplus dealers in the 50's and 60's are still around.

Ideal for something like this I should think.

Thread: Change to the Code of Conduct
25/06/2020 17:27:03
Posted by Neil Wyatt on 25/06/2020 13:30:37:

Regular mentions are dodgy editor

 

You might want to consider the ambiguity of that. wink

 

(oh - I see someone beat me to it!)

Edited By Bandersnatch on 25/06/2020 17:27:41

Thread: POCKETMAGS works with WINDOWS 10 and WINDOWS 8.2
25/06/2020 17:22:16

... er what's Windows 8.2 ?

Thread: Bedford Files
23/06/2020 01:38:25
Posted by MC Black 2 on 23/06/2020 00:17:50:

The next job is to obtain a couple of handles and I shall try to buy plastic ones with holes already made.


... an ideal project for a 3D printer - trust me, I know.

Thread: DYMO labels [safe removal] ... what method ?
20/06/2020 01:10:29

Some varieties of jelly-type hand cleaner ... Swarfega etc .... are useful in removing adhesive without affecting paint. Just goop it on and leave it for a while.

Thread: My Morgan SCARA coming together
18/06/2020 18:28:57
Posted by Joseph Noci 1 on 18/06/2020 12:10:49:

WARNING - Those opposed to over-engineering should avoid reading this lot...



On the contrary, Joseph. Given how poorly many of the lower-priced commercial 3D printers are "engineered", over-engineering is refreshing.

Nice job!

Thread: More Windows 10 Shenanigins
16/06/2020 18:23:38

Steve, in the same spirit, I've been into computers since the 8080 (actually the 4040 in a small way). I've run CP/M, DRDOS, MSDOS and every version of Windows from Win3.0 and WWG through Win10 (yes, including Win10) - except Vista. Not to mention Unix and Qnx (in a business environment) and even a smattering of Linux. I've been connected to the global internet virtually since day-1

My paranoia on both the security and obsolescence fronts is more moderate.

I'll stick with Win8.1 thanks,

 

Edited By Bandersnatch on 16/06/2020 18:33:06

Thread: Brexit No Deal - WTO duty on EU machines/tooling?
16/06/2020 17:24:39
Posted by David Maynard 4 on 16/06/2020 13:48:47:

I must say I find it fascinating that VAT should be charged on another tax......

Isn't that why the tern "Value Added" was invented in the first place?

Thread: More Windows 10 Shenanigins
16/06/2020 14:58:37
Posted by Michael Gilligan on 16/06/2020 10:01:29:

The mind is boggled :

 

Well my mind certainly was and it was my (apparently mis) understanding that iPadOS would force something like that on the user so I stayed with regular iOS (reactionary, stick-in-the-mud).

As far as the recent update goes, I tried it on my spare iPad. Although the update is billed as iPadOS 13.5.1 it seems it actually installs either the iPadOS or iOS update as appropriate to whatever OS version you already have installed.

(Keyboard melting due to excessive use of the shift key with Apple software naming).

Edited By Bandersnatch on 16/06/2020 15:01:08

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