Nozzle fabrication/ordering (Nov '17)

[alanambrose]

>>> Your No 1 nozzle has now placed a thousand components and seems to be holding up OK

Nice, did you feel the need to flatten the business end?

>>> Not only that they knock off, but that the hole is re-usable (if that makes sense)

I could make up some blanks for Samsung nozzles for the in the next run - which I'm planning on sending in over the next day or so. Do you have a preference re brass sleeve, PTFE sleeve or sleeve made of body material (I saw some chat someway back that no-sleeve works fine).

BTW most recent test:

http://anagram.net/nuts/Versatronics/Nozzles/1316247660609.bmp

- better detail, but material is a bit more flexible. I'll turn the ends and mount them up.

Alan

[trev]

This looks to be great progress.

[alanambrose]

We'll get there eventually

@spiyda - is this it for the Samsung base?

http://anagram.net/nuts/Versatronics/Nozzles/RVT%20nozzle%20for%20Samsung%20tips.pdf

Exactly 3mm hole? Samsung boss just glues onto flat?

A.

[spiyda]

I could make up some blanks for Samsung nozzles for the in the next run -
Alan

Pm me your address and I will send you a Samsung Nozzle to play with...

see what you think before committing to making any special prints ... 
and I will machine the boss off an original tomorrow to see if the remaining 1mm seems strong enough..

re your nozzle, it was exactly as sent, no cleaning up of any kind  ....  result !

[alanambrose]

an update..

I managed to crunch the two rev C nozzles, pah. The 1st as I was pressing in the brass sleeve. For the second, I glued in a PTFE sleeve and then reamed the inside diameter off centre. As the famous Canadian says ... it never ends . The idea of making the ends bigger and then turning to exact size, won't work I think as this new SLA material is more detailed but slightly more bendy.

Faster than expected though I have rev D: 1 'tool 7' o-ring style sized for 5050 LEDs / 2 bases for Samsung nozzles / two more variations of tool 1 - one with 'body' sleeve supposedly printed exact size and one to be reamed as usual. Of course, the last two need the nozzles drilled out to size, but I think I've nailed that. Also a reaming fixture / a sleeve to screen the main camera LED ring from the LEDs / a camera adaptor should I ever get round to calibration.



I'll keep you posted...as ever if anyone else wants to test these let me know...the more testing, the better.

Alan

[alanambrose]

OK '5050 tool7', 3D printer version, SLA version, samsung point version glued / reamed / drilled & ready for testing - with a mix of body / PTFE / brass sleeve:

[alanambrose]

I think I marginally prefer the PTFE sleeves so I just sent off an order for a complete set of nozzles including a MMU MELF one - all to fit PTFE. FYI I'm using nominal '10x12mm' PTFE tubing, reamed to 10.5mm to fit the pick-up head, and with the nozzles set up to take the 12mm dimension.

A.

[Mike]

I've just done a job where my customer produced some parts using their Formlabs SLA printer - judging from these, I think nozzles made this way could be viable - do you have a file for a nozzle that I can get them to try printing?

[alanambrose]

Hi Mike, sorry to be slow replying - I've had a virus. The latest ones were actually done on a formlab. The little bumps are where the supports go and were clipped off. I only just twigged recently that the resin process needs the part to be held at an angle so the non-lasered / non-hardened resin runs off. Hence the asymmetric nature of the bumps and 'laminations'. As well as some gentle fettling, from memory, my formlabs trials still needed drilling out - claimed 3d printing accuracies are to my mind largely bs. Tool 1 to take a brass sleeve here:

http://anagram.net/nuts/Versatronics/Nozzles/STLs/Tool 1 for brass sleeve.stl

The x-section, designed to make drilling easier, is here:



I have at times been successful drilling both from the top and the bottom, but it's a process that could be improved.

Alan