Search found 2686 matches

by jonb
Tue May 26, 2020 8:31 am
Forum: off-topic
Topic: 3D printing advice
Replies: 229
Views: 10154

Re: 3D printing advice

To be honest, I don't care for the custom colour. The machine looks great as-is. Lots of Youtooberz print plastic rail inserts that look pretty cool against all the black, but the whole thing a different colour? No. I mean, how would you get replacement parts? The rails I've seen are all black or pl...
by jonb
Mon May 25, 2020 6:09 pm
Forum: off-topic
Topic: 3D printing advice
Replies: 229
Views: 10154

Re: 3D printing advice

Looks like the 3rd thingie has been unlocked. So we will have TMS2209 stepper drivers FWIW.
by jonb
Fri May 22, 2020 4:44 pm
Forum: off-topic
Topic: 3D printing advice
Replies: 229
Views: 10154

Re: 3D printing advice

Creality reiterated in one of the Kickstarter comments that it would perform as stated - in other words, at 30 DB... fingers crossed..

I'd seen that video of the concrete block. Seems a good idea for stability too.
by jonb
Fri May 22, 2020 10:34 am
Forum: off-topic
Topic: 3D printing advice
Replies: 229
Views: 10154

Re: 3D printing advice

That's a great video although it says a fair bit that is already known (if one had read the Kickstarter FAQ, which he refers to often). I was a bit disappointed by the fan noise. I thought the machine printed at 30db (Creality claims this) but his microphone was showing 50db for the fan alone. Reaso...
by jonb
Thu May 21, 2020 10:16 am
Forum: off-topic
Topic: 3D printing advice
Replies: 229
Views: 10154

Re: 3D printing advice

I thought Capricorn tubing had better resistance to heat deformation (than the normal stuff)?
by jonb
Wed May 20, 2020 6:10 pm
Forum: off-topic
Topic: 3D printing advice
Replies: 229
Views: 10154

Re: 3D printing advice

Oh that’s great, thank you so much! I’ll PM you.

Ah, speaking of the extra nozzles, would have been nicer if they’d included a tungsten steel nozzle. And Capricorn PTFE. Bit I’m not complaining. I’ll be happy with the 32 bit board freebie. :D
by jonb
Wed May 20, 2020 9:47 am
Forum: off-topic
Topic: 3D printing advice
Replies: 229
Views: 10154

Re: 3D printing advice

I'm pretty sure (though I've not done the actual math) that the CR-6 is a good deal cheaper than an Ender 3 Pro modified to the same spec. Except, you don't get the wider bed carriage, dual Z steppers or slightly bigger build size. There are probably other benefits to the CR-6, too.
by jonb
Wed May 20, 2020 9:13 am
Forum: off-topic
Topic: 3D printing advice
Replies: 229
Views: 10154

Re: 3D printing advice

Possibly nylon. As I said before, I'm interested in printing functional parts, and they might need to be strong. However, I will start with good old PLA and learn the ropes first. Or try to! The underlying purpose of my discussion so far has been a) to find out where to start and b) to get an idea o...
by jonb
Tue May 19, 2020 5:08 pm
Forum: off-topic
Topic: 3D printing advice
Replies: 229
Views: 10154

Re: 3D printing advice

I'll check it out, thanks!

Meanwhile I found this Creality video of the CR-6 SE modular nozzle disassembly. Should not be that difficult to convert it to all metal hot end (by replacing the "heat break" tube).
by jonb
Tue May 19, 2020 8:43 am
Forum: general
Topic: Today I received.....
Replies: 5988
Views: 611775

Re: Today I received.....

An Epson PX-8. Actually runs CP/M... Check out Computing Today November 1984 Thanks John. A pretty bland review - were they trying to cozy up to EPSON? ;) My PX-8 only has the two ROMs - Wordstar and a CP/M utility ROM (with only the very basics on it - PIP, STAT, SUBMIT), although there are lots o...
by jonb
Mon May 18, 2020 12:00 pm
Forum: acorn atom and acorn system series
Topic: Replacement power jack for Atom
Replies: 6
Views: 622

Re: Replacement power jack for Atom

I actually got a plug (not jack) from Maplin.

viewtopic.php?f=44&t=7643&p=78193#p78193

Maybe you can get a matching socket?
by jonb
Mon May 18, 2020 11:21 am
Forum: off-topic
Topic: 3D printing advice
Replies: 229
Views: 10154

Re: 3D printing advice

Wow you’re really going for it! I wonder if keeping the micro switch would be a good idea for safety? Belt & braces and all that? Meanwhile, I’m struggling with 3D modelling. I tried a number of programs and could not get them to place items how I wanted them. Was trying to design a ratchet gear (ha...
by jonb
Sat May 16, 2020 12:21 pm
Forum: off-topic
Topic: 3D printing advice
Replies: 229
Views: 10154

Re: 3D printing advice

All metal hot end.. it's the same as the normal hot end except the heatsink / nozzle is machined to take the Bowden cable. The net effect of which is the cable doesn't run all the way to the nozzle and as such does not get as hot as the filament being melted. I can't see that being any more expensiv...
by jonb
Sat May 16, 2020 10:23 am
Forum: off-topic
Topic: 3D printing advice
Replies: 229
Views: 10154

Re: 3D printing advice

A guide to filaments I just found: https://3dinsider.com/3d-printing-materials/ None of them, not even nylon, are listed as needing more than 260 degrees of heat, which the CR-6 head can reach (according to their current specs). The filament guide lists wood as the highest temperature filament (at 2...
by jonb
Fri May 15, 2020 9:43 am
Forum: off-topic
Topic: 3D printing advice
Replies: 229
Views: 10154

Re: 3D printing advice

Hmm, I am still sceptical. You're saying that my assessment of how the levelling works is correct. Wouldn't it be right to say that the print is better with a level bed rather than a modified set of parameters to take account of an off-level bed? Not that it's a bad feature mind..! Will you select t...
by jonb
Fri May 15, 2020 8:44 am
Forum: off-topic
Topic: 3D printing advice
Replies: 229
Views: 10154

Re: 3D printing advice

My concern about an aluminium plate is that it isn't magnetic, so I can't buy a magnetic pad for it (well, I can buy it, but it won't stick! :lol: ). Clearly much to learn here. I've been mighty impressed with the ease of use you get with the magnetic base. Though as I understand it, they won't tole...
by jonb
Thu May 14, 2020 7:54 pm
Forum: off-topic
Topic: 3D printing advice
Replies: 229
Views: 10154

Re: 3D printing advice

Too late, Elminster I've "pledged". Oh by the way, the Kickstarter page is linking to the 3d nerds review as well. I think it'll be OK. The Ender 3 Pro is the benchmark for printers in this bracket and this has some really neat features that would have cost quite a bit of money to retro fit to an En...
by jonb
Thu May 14, 2020 4:04 pm
Forum: off-topic
Topic: 3D printing advice
Replies: 229
Views: 10154

Re: 3D printing advice

Fair enough, scruss. But Wu's video also shows a 3D printed skull and a torture test (designed by that guy on Maker's Muse) and they both looked pretty exceptional to my (admittedly, novice) eyes.
by jonb
Thu May 14, 2020 2:52 pm
Forum: general
Topic: Today I received.....
Replies: 5988
Views: 611775

Re: Today I received.....

An Epson PX-8. Actually runs CP/M... IMG_6546.jpg IMG_6547.jpg IMG_6548.jpg IMG_6549.jpg Surprisingly, it appears to work, so there will be no need for a long "Fixing a PX-8" thread. What'll be interesting is if I can get uIDE going on it. It's possible, because all the needed signals are present on...
by jonb
Thu May 14, 2020 1:59 pm
Forum: off-topic
Topic: 3D printing advice
Replies: 229
Views: 10154

Re: 3D printing advice

Dagnammit. After reviewing Naomi Wu's video again and taking another look at the prints she got I've just pulled the trigger on the CR-6 SE. Yes, looking AT THE PRINTS, mark you. Not an euphemism!

Now the long wait begins...
by jonb
Thu May 14, 2020 1:46 pm
Forum: off-topic
Topic: 3D printing advice
Replies: 229
Views: 10154

Re: 3D printing advice

Just watched that and spent most of my time yelling at the screen "JUST GET TO THE POINT ALREADY!"

The print they did looked pretty good, not that they showed many close ups. Why didn't they print a Benchy? Or at least, test their little column with a micrometer? As he said, it's promising...
by jonb
Mon May 11, 2020 4:16 pm
Forum: off-topic
Topic: 3D printing advice
Replies: 229
Views: 10154

Re: 3D printing advice

Seeing jonb's thread on the Superbrain restoration: that case isn't going to be 3d printable at home, affordably any time soon. It's huge and encloses massive volumes. The tooling for the original must've been unbelievably expensive. I agree it can't be 3d printed in one go, but in sections? Maybe....
by jonb
Mon May 11, 2020 11:11 am
Forum: other vintage hardware, software and languages
Topic: Superbrain #3 : The Superbrain II board
Replies: 81
Views: 6602

Re: Superbrain #3 : The Superbrain II board

And now some more lockdown relief: uIDE drivers for the Superbrain II. http://www.vcfed.org/forum/showthread.php?57196-uIDE-on-the-Superbrain&p=620734#post620734 I now turn my attention to making some sort of case for the Superbrain II board. Can't leave it on my desk, naked. It'll get damaged. The ...
by jonb
Wed May 06, 2020 7:10 pm
Forum: off-topic
Topic: 3D printing advice
Replies: 229
Views: 10154

3D printing advice

Hi I’m thinking of scoring a 3D printer. Initial selection is a Creality Ender 3 Pro which can be got from Bangood for under £200. But... Is it any good? I’ve never bought from there before, is it likely to be genuine or fake? What is “genuine”? I’ve seen many Ender 3 printers with different brand n...
by jonb
Wed May 06, 2020 9:12 am
Forum: other vintage hardware, software and languages
Topic: Superbrain #3 : The Superbrain II board
Replies: 81
Views: 6602

Re: Superbrain #3 : The Superbrain II board

A little lockdown relief. Since the last photo, this SB II board has been packed away. Well, I say "packed away", but what I really mean is "stuffed into an antistatic bag and leaned against a bookcase in my study" as I have nowhere safe to store it. However, yesterday I took it out and connected it...
by jonb
Sun May 03, 2020 6:59 pm
Forum: other vintage hardware, software and languages
Topic: Superbrain Mystery Zener Diode
Replies: 47
Views: 3271

Re: Superbrain Mystery Zener Diode

That’s great thanks Mark! Previous owner of the video board confirmed the poly cap works (after I’d posted my question) on another board. So now I have a spare video board for the Superbrain II but it’s busted. Some diagnosis in due course. Also will need a fly back transformer. On the SB it is a re...
by jonb
Sat May 02, 2020 3:56 pm
Forum: other vintage hardware, software and languages
Topic: Superbrain Mystery Zener Diode
Replies: 47
Views: 3271

Re: Superbrain Mystery Zener Diode

@1024MAK Mark, I just got hold of another video board that is dead. It has had a non-polarised cap replaced (same as on my board) but it looks like one of those X2 caps you get in switching PSUs. Kind of rectangular blue box, marked G118517082 522 10uK63 KD. On the face of it, a 10uf cap, non polari...
by jonb
Wed Apr 29, 2020 9:24 am
Forum: general
Topic: I wonder what this contains?
Replies: 18
Views: 1275

Re: I wonder what this contains?

Indeed, and it's an eBay listing policy violation for another reason: They don't allow sales of links to "compilation or informational items" , probably for the copyright infringement reason.
by jonb
Tue Apr 28, 2020 3:14 pm
Forum: general
Topic: Today I built ...
Replies: 81
Views: 12048

Re: Today I built ...

flaxcottage wrote:
Sun Sep 29, 2019 2:27 pm
That is the current Mrs Flaxcottage's question.
Sorry, that made me laugh! :lol:
by jonb
Mon Apr 27, 2020 4:35 pm
Forum: general
Topic: Today I received.....
Replies: 5988
Views: 611775

Re: Today I received.....

Is that an Issue 1? Grey keys and all that...

Go to advanced search