Search found 269 matches

by scruss
Thu May 28, 2020 12:16 am
Forum: off-topic
Topic: 3D printing advice
Replies: 229
Views: 9083

Re: 3D printing advice

Coming back to comment about moisture affecting PLA is it really an issue? Yes, but not in a way you might expect. PLA is slightly hygroscopic, so the outer layer tends to swell as it hydrates. It doesn't have much effect on the print quality, but what it does do is make the filament really brittle...
by scruss
Wed May 27, 2020 2:37 pm
Forum: off-topic
Topic: 3D printing advice
Replies: 229
Views: 9083

Re: 3D printing advice

Like anyone else who has a 3D printer though, I want to have as few iterations a possible in order to save filament. Darned expensive stuff! Is it? I remember being really paranoid about saving filament when I started out, but I learned you have to burn some filament to gain experience of what your...
by scruss
Wed May 27, 2020 12:35 am
Forum: scanning of books, magazines, ads and letters
Topic: Personal Computer World scans!
Replies: 61
Views: 3125

Re: Personal Computer World scans!

I have a dog-slow connection, but I do have experience uploading > 500 items to Internet Archive. I'd recommend using the ia command-line tool for batch uploads. Upload each one as a separate item just as a PDF. Don't worry about OCR: archive.org does that automatically. If you'd rather, ia allows y...
by scruss
Mon May 25, 2020 3:25 pm
Forum: off-topic
Topic: 3D printing advice
Replies: 229
Views: 9083

Re: 3D printing advice

Doesn't look like he paid for the unit, though. Any review that's for a free device is basically company advertising.

Nice use of a load cell or FSR for levelling in the CR6, though.
by scruss
Fri May 22, 2020 3:22 pm
Forum: off-topic
Topic: 3D printing advice
Replies: 229
Views: 9083

Re: 3D printing advice

A temperature-controlled hot-end fan would make the CR6 much quieter than the Ender 3. The Ender 3's fan is always on, and they are cheap sleeve-bearing screamers. The Ender 3's electronics fan is usually on while it is printing. Mine failed early on (so loud!) and getting a replacement 40 mm 24 V f...
by scruss
Thu May 21, 2020 5:20 pm
Forum: off-topic
Topic: 3D printing advice
Replies: 229
Views: 9083

Re: 3D printing advice

Bowden tubing doesn't get hot, except if there's a bit in the heat break. That bit should get warm, at best, if the heat break and fan are doing their job. My first home-made printer went into complete thermal runaway once and ejected filament + degraded PTFE through the nozzle in a series of acrid ...
by scruss
Wed May 20, 2020 11:29 pm
Forum: off-topic
Topic: 3D printing advice
Replies: 229
Views: 9083

Re: 3D printing advice

Hardened steel nozzles are only useful for really abrasive materials, and have very different heat transfer properties to brass. Unless you're using chopped carbon filled filament they're a bit niche. And carbon-filled anything is a health liability anyway. Capricorn tubing is the go-faster stripe o...
by scruss
Tue May 19, 2020 3:39 pm
Forum: off-topic
Topic: 3D printing advice
Replies: 229
Views: 9083

Re: 3D printing advice

Was trying to design a ratchet gear (haven’t seen any parametric designs for those yet). … Where to start? There's lots of this sort of thing for OpenSCAD: see printable_clock_project for some starters. OpenSCAD is powerful but odd. It may look like a programming language, but it's really just a wa...
by scruss
Mon May 18, 2020 8:12 pm
Forum: programming
Topic: Real resolution of Mode 7
Replies: 14
Views: 900

Re: Real resolution of Mode 7

davidb wrote:
Mon May 18, 2020 7:11 pm
I think people have done something like this on other character-based systems - maybe the Commodore PET?
This C64 game uses colour text mode to good effect:
https://www.youtube.com/watch?v=zwFoert ... e=emb_logo
Game link: [CSDb] - Digiloi by Dr. TerrorZ (2018)
by scruss
Mon May 18, 2020 5:24 am
Forum: off-topic
Topic: 3D printing advice
Replies: 229
Views: 9083

Re: 3D printing advice

All-metal hotends can manage higher temperatures, true, but they can cause all sorts of oozing problems for normal filaments like PLA. Since most people don't need the really high temperatures, all-metal is rarer. ABS is slightly annoying to print (awful smell, shrinkage, needs an enclosure or goes ...
by scruss
Sat May 16, 2020 1:18 am
Forum: off-topic
Topic: 3D printing advice
Replies: 229
Views: 9083

Re: 3D printing advice

There's nothing in a 3D printer that needs a 32-bit controller, but if this is a zero-cost option, why not? My Prusas are all 8-bit, as is the Ender 3. 32-bit µcs often give better options for UX and connectivity, and sometimes even come in cheaper than 8-bit controllers because more functions can b...
by scruss
Thu May 14, 2020 3:41 pm
Forum: off-topic
Topic: 3D printing advice
Replies: 229
Views: 9083

Re: 3D printing advice

A Benchy is only a very superficial test of a 3D printer. It shows off how well your printer can do shells and bridging. Even a fairly terrible printer can do nice shells if you slow it down enough.
by scruss
Mon May 11, 2020 11:44 pm
Forum: off-topic
Topic: 3D printing advice
Replies: 229
Views: 9083

Re: 3D printing advice

If you're looking for forums, Thingiverse has lots. They're a bit hidden, but they're only about 3d printing.

Surprisingly, Reddit's /r/ender3 isn't just terrible. They have some decent moderation.
by scruss
Mon May 11, 2020 1:48 pm
Forum: the complete BBC games archive
Topic: Upgrading the version of jsbeeb on bbcmicro.co.uk
Replies: 29
Views: 1739

Re: Upgrading the version of jsbeeb on bbcmicro.co.uk

Just played Arcadians on MacOS Firefox - works fine here (Firefox 76). No flashing/flickering here on Firefox 76, Ubuntu 20.04 x86_64. Tried full screen, small windows — no flickering. My system's fast(ish), but has no accelerated graphics. As a sometime Internet Archive emulated system tester, I'v...
by scruss
Mon May 11, 2020 1:24 pm
Forum: off-topic
Topic: 3D printing advice
Replies: 229
Views: 9083

Re: 3D printing advice

No, there wasn't a refund available on Simplify at the time. This was a couple of years ago. Our job is to get reliable 3D designs out to people who need them, and Simplify was too much expense and uncertainty. We want print and go, and favour strength over looks (up to a point). IIRC - it was a rem...
by scruss
Mon May 11, 2020 3:11 am
Forum: off-topic
Topic: 3D printing advice
Replies: 229
Views: 9083

Re: 3D printing advice

But I agree about the settings, once dialled in you wonder why you ever had issues. Pretty much all dialling in is a waste of time. Use the out of the box settings. They'll be just as good as anything you've fiddled with, is what I was trying to say. For us, Simplify3D was under-extruding so much t...
by scruss
Sun May 10, 2020 8:40 pm
Forum: off-topic
Topic: 3D printing advice
Replies: 229
Views: 9083

Re: 3D printing advice

… So I have decided to stick with the Huxley I have but heavily modify it. Which puts me in a similar boat to if you buy an Ender 3, I.e. after a few weeks you will want to modify it. Not necessarily. I've had mine since November 2018. All I've done to it is: replaced the firmware. This is a safety...
by scruss
Thu May 07, 2020 12:36 am
Forum: off-topic
Topic: 3D printing advice
Replies: 229
Views: 9083

Re: 3D printing advice

Ender 3's a perfectly good first printer. I have one. There are a few things I'd upgrade on it, not least the dodgy firmware it ships with. It's perfectly okay, though. I think I've written about it plenty elsewhere here. If you can't find a local reseller (more expensive, but someone to handle warr...
by scruss
Sat May 02, 2020 7:43 pm
Forum: general
Topic: I wonder what this contains?
Replies: 18
Views: 1160

Re: I wonder what this contains?

fixItOS, previously
by scruss
Thu Apr 30, 2020 3:42 am
Forum: 32-bit acorn software: other
Topic: Reading BBC Basic files on Linux
Replies: 20
Views: 1154

Re: Reading BBC Basic files on Linux

BBCSDL wil be assuming a default extension of ' .bbc ', if the file you are converting has no extension add a trailing dot when you enter its name. That worked. Utterly illogical on Linux, but it works. Thanks. And just tested and the same in BBC BASIC for Windows, and in Brandy Basic, and in PDP B...
by scruss
Wed Apr 29, 2020 11:30 pm
Forum: introduce yourself
Topic: Hello from Arkansas, USA
Replies: 17
Views: 784

Re: Hello from Arkansas, USA

Hi Jeramy - welcome! Acorn computers are a bit thin on the ground in North America. There are a bunch of them here in Canada, but that's mostly because a school district in Toronto used them. I sometimes make it down to Eureka Springs, AR but that's barely into your state at all. Nice scenery, thoug...
by scruss
Wed Apr 29, 2020 5:22 pm
Forum: 32-bit acorn software: other
Topic: Reading BBC Basic files on Linux
Replies: 20
Views: 1154

Re: Reading BBC Basic files on Linux

Didn't have much luck running BasConv on either BBCSDL or Matrix Brandy: BBCSDL couldn't find the source file specified in the current directory; Matrix Brandy gives Address is out of range at line 430 in PROCBasConvInit . I might be missing some Acorn assumptions with file names: I'm just typing th...
by scruss
Wed Apr 29, 2020 4:56 pm
Forum: 8-bit acorn hardware
Topic: Looking for 3D printing tips
Replies: 28
Views: 1422

Re: Looking for 3D printing tips

Wow, that's lovely! Great work! I'd seen some lovely MJF work, but never anything this big or this (relatively) cheaply. Definitely a viable option for replacement computer cases, certainly compared to injection moulding tooling. You won't be able to break it with your fingers. It's sintered Nylon-1...
by scruss
Wed Apr 29, 2020 2:44 pm
Forum: 8-bit acorn hardware
Topic: Hypothetical BBC Micro Next
Replies: 6
Views: 458

Re: Hypothetical BBC Micro Next

Development costs for a device to give everyone the BBC Micro++ they want would be astronomical, as BigEd suggested. So much about the machine is about the interfaces. A better analogy for the Spectrum Next for the beeb might be the Ultimate 64 based on the C64. It's FPGA, but maintains a lot of har...
by scruss
Wed Apr 29, 2020 2:35 pm
Forum: 32-bit acorn software: other
Topic: Reading BBC Basic files on Linux
Replies: 20
Views: 1154

Re: Reading BBC Basic files on Linux

Soruk 's Matrix Brandy BASIC can read, save and run many of these programs directly under Linux too. Here's Jan's "smoulder" (from BAS08 ) jan_vibe-BAS08_Smoulder.jpg The hardest part of getting these going was fixing the $&#^$!@ file permissions in the archive: all were 000, so you couldn't read a...
by scruss
Sat Apr 25, 2020 8:53 pm
Forum: modern implementations of classic programming languages
Topic: Matrix Brandy BASIC VI for console and SDL1.2: V1.22.8 released
Replies: 1187
Views: 83662

Re: Matrix Brandy BASIC VI for Linux with SDL: V1.22.4 released

That warning's been there for as long as I can remember. It is the only use of fgets in the whole system that doesn't assign or check fgets()' return value, though.
by scruss
Fri Apr 24, 2020 7:12 pm
Forum: development tools
Topic: bbcim problems on linux
Replies: 8
Views: 725

Re: bbcim problems on linux

It compiled and read disk images on my Ubuntu x86_64 system, but won't add anything or even ID known-good disk images as disk images. It also gives lots of warnings like Unable to open plop.dsd.dsk when successfully reading plop.dsd
by scruss
Sun Apr 19, 2020 4:54 pm
Forum: off-topic
Topic: Printing on Thingiverse
Replies: 19
Views: 1322

Re: Printing on Thingiverse

Time and care is what's needed with these. Oh, and blue threadlock, if you can be bothered. The first printer I built was always a bit skewed. 3-4 point levelling is only a pain until the device settles, then it's something to do every few months. I'm still amazed to find 3-point levelling on really...
by scruss
Sun Apr 19, 2020 1:21 am
Forum: 8-bit acorn hardware
Topic: What printer are you still using?
Replies: 14
Views: 714

Re: What printer are you still using?

ThinkJets are nice. I guess there must be clever ways of refilling them by now. I remember the Diconix I had (a badged Thinkjet) would make quiet splat! noises as the ink hit the paper. I have (and use) an Oki ML320. They are indestructible. The one printer I haven't got going very well (although I ...
by scruss
Sun Apr 19, 2020 1:16 am
Forum: off-topic
Topic: Printing on Thingiverse
Replies: 19
Views: 1322

Re: Printing on Thingiverse

That looks like amazing quality from a Huxley. You must have built it very straight and rigid

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