Super hard nozzles - Test pilots

[Anders Olsson]

Well, I probably would be a bit careful with the burner regardless of what I use it for.
I did partially deform a heater block once when I was burning it clean of polycarbonate

Either way though, the burner is one thing that people would come up with using, so it would be good to know if the ruby nozzle is much less likely to survive that treatment than a normal brass nozzle

[PeggyB]

as a jeweler, there are some stones that can be heated, like diamant, cubic zirconium, garnet. For other stones it depends on the inclusions/irregularities, the heat could influence the color. I guess you are using the artificial rubies... But most important: don't throw it in cold water when hot!

[Amedee]

Won't a burner 800-1500C damage the brass that has a starting melt point of 1000C ?

You don't want to burn that hot -- just enough to burn our the plastic residue...

Just in case, I found back the original Korneel post re. this method. I used it a couple of times and found it very efficient.

[ivan.akapulko]

Anders, check this out: http://www.tisncm.ru/research-departmen ... s_eng.html
Just one week of work (if i understand correctly), and you can take something much more perfect than ruby

[ivan.akapulko]

OMFG! Gears from diamond monocrystal!

[Anders Olsson]

Anders, check this out: http://www.tisncm.ru/research-departmen ... s_eng.html
Just one week of work (if i understand correctly), and you can take something much more perfect than ruby

In fact, I know two guys at the University who are operating diamond growth machines
It will be difficult to get diamond orifices down to reasonable price levels though since the process is very slow, drilling holes in diamond is very difficult and high demand from industry tends to set a minimum price for diamond.
We have been discussing this several times at work actually and my conclusion is always ruby will be good enough for what people are likely to print.
It might wear slightly with boron carbide but it is cheap enough to replace then.

That said, we might make a diamond nozzle in the future, partly because it has interesting properties and partly just because we can
It will probably designed a bit differently though if we decide to make it.

[Blizz]

@Anders: Might be of interest: Tungsten nozzle

[Neotko]

Yesterday installed back the Ruby nozzle and printed some

E3D nozzle


Ruby


But I had to uninstall it, since my alu umo+ block screw died (aluminium suuuuucks) and after trying to fix it now the pt100 it's totally dead (was in bad shape already). So now I'm waiting to assemble a um2 hotend and forget about this umo+ hotend on one machine at least.

The number of thinks that have died on my main umo+ look just like a 'built-in obsolescence' just after 1month of warranty off, heater 1 board controller died, now the hotend goes bye bye with the pt100 on the way, oh and also heater (cable) 1 also died... /sulk

[LePaul]

Oh sorry to hear that. I haven't touched my printer in a month, so busy with CNC parts

I am trying to see the differences between the two prints, look good on both!

[Neotko]

Indeed now that I removed the um2 feeder motor and fixed the error number 21 on my 1.75mm assembly, it prints just like the other with the bonis of overhangs and a much better layer over layer depositions. But ofc to see the difference you need to print the stuff over

Yeah been having a bad printer week. Too much spares to buy!

[Anders Olsson]

So, things are finally moving again here

I will start collecting addresses shortly of those of you who did not get a ruby nozzle yet.

It has to be mentioned that these are still prototypes, although made in a professional workshop.
I have already made a few changes for the next batch to make assembly easier and make the nozzle more robust.

That does not mean the prototypes are bad in any way, just that you might be slightly more likely to ruin tham then the next batch.

What I would like feedback on for this batch is the fixing of the ruby, potential for leaks and the thermal conductivity (printing at high feed rates).

[Titus]

It looks damn sexy!

[Blizz]

Soooo prrrrreeetty

[martin-bienz]

really cool!

[Izzy]

It's taken a while for me to reply as I had to but my iPad in its waterproof/drool proof cover.