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Topics - kibodwin

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General Discussion / bbc article on Dehli polution!!
« on: November 09, 2018, 01:46:37 AM »
I saw this and thought something is wrong...
poor kid, top row second from the left... there are no filters on his 3M mask...


Inspiration / Arabian Geomatric Patterns
« on: August 13, 2018, 09:15:16 AM »
This is a copy of the cd that comes with the Arabian Geomatric Patterns book by pipin books press. The rights on the images of the book are 'free' as in they allow you to use them to print t-shirts and other uses so I feel ok posting here. I use them with the kids to create all sorts of art but ultimately I got this to make laser engraved lampshades out of wood veneer.
Arabian Geomatric Patterns
I can reupload if needed.
An example of the patterns is attached.
If you are interested in this sort of mathematical patterns then I strongly advise you get this book, it is not as expensive as I would have thought at around 16pounds uk.

General Discussion / new project? laser engrave knives?
« on: June 29, 2018, 02:39:43 AM »
So I have a family member who is off to university and I would like to send them packing with an engraved chopping board and some knives (some nice sharp ones, not the cheap nasty ones). I have not decided which knives to offer but the Ikea 365 VÍRDA Utility knife ones look nice. It looks like some sort of rubber handle.
Anyone managed to engrave a knife blade or would I be better engraving the handle ?
I should be able to manage the chopping board but I have not yet even tried to engrave metal...
I plan on using the K40 CO2 laser for this but can also use the 2.5W laser diode.
If it proves to be too difficult to engrave the knives I can always engrave a copping block..
suggestions welcome!!

General Discussion / soccer football world cup 2018 rant.
« on: June 25, 2018, 12:53:14 PM »
So in general I dont follow the football, the S.O. definitively has her favourite team and country, me its a different sport.
So being subjected to this as I am.. and whilst it would provide the perfect excuse to let her watch the footie and my run up the electricity bill...
I cant help think that these football players need a slap on the head, preferably like the old man would say with the "intelligence stick".
Why you might ask, well bloody he** they dont half talk back to the referee.
I would give a slap if anyone talked to me in the street like that. Face to face shouting aggressively. I mean honestly, I cant believe I
am alone in thinking this? The dude give a yellow card and runs backwards from the idiot in fancy shoes but I would happily provide
him with a red and a foot to the a**.
rant over, off to find something to burn.

General Discussion / 3D printer watchdog, monitoring your 3D printer.
« on: June 19, 2018, 01:21:45 AM »
I saw this on hackaday, looks interesting and ups the safety level of your cheap 3D printer...

General Discussion / hackaday printed it
« on: May 08, 2018, 12:08:37 AM »
I just saw this and it looks like a nice list of useful 3d printing ideas...


General Discussion / help! broke glass print bed!!!
« on: April 12, 2018, 01:09:46 AM »
Trying to get the scanned (3d systems sense scanner!) print of a colleges body off the print bed I cracked the glass print platform into bits. I think I saw that as it is a heated bed I need to use  borosilicate glass.
Is this the case or can I use any old glass? (I have the glass from an old paper scanner I can use, no idea what glass this is.).
Is there a preferred thickness? The original is 3mm but I am not sure if this has an effect on printing..
Do you have a preferred supplier for replacement glass? I will probably get some off eblag but will also look for a local supplier.

Looks like this time it was a loose heater block and not the usual culprit, the heated bed wires coming loose.
I use a webcam to monitor my printing when I am no in the same room....
Please check your printers connections and add a cable relief to the bed heater wires...
Scary stuff, be safe.

General Discussion / remove / reduce engraved chopping board smell?
« on: March 15, 2018, 07:41:46 AM »
I have engraved a bamboo chopping board and it smells quite strongly. I have washed it with vinegar but
now it smells of burnt wood and vinegar!!
Any ideas as to how to reduce the strength of the burn smell?
How do you remove such smells on wood?

Post-Processing 3D Printed PLA Print with a Rock Tumbler

I would have posted to the 3d printer section but I think this could be
used on other materials, a test on laser engraved wood would be interesting...
feel free to move to the correct section

So I saw this and think it might be a good way to clean up what are messy prints
that I seem to be getting on a certain filament ( filament could also be too humid).
I am wondering about a few things;
How noisy is this, a lot I suspect.
What other materials can be cleaned like this, cant see any engraving surviving this.
could this be used to cloud glass surfaces to facilitate laser engraving?
What alternative to screws (seems like a doggy choice, how about metal ball bearings? sand? gravel?).
could I just put the full print in, supports included and hope the supports get cleaned away?
would I need a higher infill and wall thickness to protect the print
what effect would adding water to the tank have?

I personally would not chose a stepper motor for this long run, seems a bit over kill, a geared DC motor  or a windshield motor
would do, no mC needed. I would also like to see some sort of clock /timer, the more analogue the better.


General Discussion / multicolour gradient filament in EU?
« on: March 05, 2018, 04:47:26 AM »
Hi everyone,
I have bought a TronXY X1 for my daughter, it is a build we will do together and in the end will be her own printer (I know, she is spoilt!). This morning I foolishly asked her what colour filament she wanted to use.... and... she wants a rainbow colour filament!!  :o
So I googled and found a supplier in the US and another in Canada but none in the EU.
I have seen the adaptors for adding colour to neutral filament with colour markers but this would be a last option. I have also tried to weld filament together but the tolerances of my extruder are so tight any change in diameter causes blockages so not really usable.
Anyone know of a supplier of rainbow filament (1.75mm pla) and help he become the best dad in the universe??

Projects / engrave skateboard, both sides?
« on: February 27, 2018, 09:00:09 AM »
As an owner of laser I get loads of can you requests... not that I mind.
I have been asked by the local youth if I can laser a skateboard deck. The back
should not be an issue if I sand the paint off as it is maple ply but I got thinking about cutting off
some of the grip part. I dont think it should be an issue but I think the sand (is it sand) used for grip might be difficult to cut through.
I have a 2.5 blue diode laser and a K40.
Anyone already tried cutting grip tape on maple ply?

Projects / 3D printed fume extractor
« on: January 30, 2018, 09:22:30 AM »
in the why did I not think of this before section;
3D printed adaptors for an inline fume extraction....
now, what kind of fan power (CFM?) would you guys and gals suggest for a K40 CO2 laser?
I think if the suggested fan works for the K40 it will also work for the 2.5W diode... so I would be killing 2 birds with one stone.

Engraving / engraving on carbon fiber??
« on: January 23, 2018, 05:16:56 AM »
I have been asked if it is possible to laser engrave carbon fibre... I see that several people have done so successfully online but...
I have a 2.5W and the K40, is this sufficient or do I nee 'MORE POWER' ???
I presume all we are doing here is burning the glue as I doubt these lasers can 'cut' carbon fibre..

Inspiration / looking for elastic band gun...?
« on: January 22, 2018, 02:13:26 AM »
I have searched the usual places but cannot find any laserable plans for a simple (or multi rubber band) elastic band gun.
Anyone have such a thing or know where I can find some?

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