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What have you just 3d printed (for airsoft)

So i recently picked up a tokyo marui type 89 gbbr and I love it but ive seen multiple people have the nozzles eat themselves using green gas and heavy bbs and even some nozzle issues in japan with the correct gas. Given that spare nozzles for it are basically unavailable and I dont like  running guns I cant get spares for ive started modeling spare nozzles for it. first test is printing now. It will no doubt require tollerancing and tweaking before it works but its a good start. And yes I did forget to put the slope on the very tip of it for feeding bbs XD. Ill put it in with a file for this version and fix it for later tests 

View attachment 124522

 
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Impressive modelling.

What material do you use?

Have you tried vapour or dipping for smoothing parts?

 
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EDcase said:
Impressive modelling.

What will you make it with and what material?
Click to expand...
Ill be making the test versions in pla until I have all the sizes right and then im going to experiment with pla+ and  petg for the final parts. For my personal use I am happy to change parts every now and again so if it lasts a couple of skirmish days im happy. I might start selling them however in the distant future so I need to be sure they will survive for a good long time on greengas. Not sure how many people have these guns. 

 
Last edited by a moderator:
EDcase said:
Impressive modelling.

What material do you use?

Have you tried vapour or dipping for smoothing parts?
Click to expand...
Didnt see the bit about vapour dipping. Not tried it yet but not yet had a print that wasnt clean enough to work as is so far. 

 
Sorry I wasn't clear.  Its vapour smoothing OR dipping.

The problem with vapour is getting even coverage (as the vapour is heavier than air and settles) and knowing when to stop.

Apparently dipping directly in Isopropyl?/acetone is a method that can result in more even smoothing but does need quite a lot in a tub. (Can be reused for this purpose)

Can obviously be repeated to smooth more.



 
Last edited by a moderator:
EDcase said:
Sorry I wasn't clear.  Its vapour smoothing OR dipping.

The problem with vapour is getting even coverage (as the vapour is heavier than air and settles) and knowing when to stop.

Apparently dipping directly in Isopropyl?/acetone is a method that can result in more even smoothing but does need quite a lot in a tub. (Can be reused for this purpose)

Can obviously be repeated to smooth more.
Click to expand...
 Ah ok. yeah I have seen that done but generally when im making mechanical parts the end measurements would be a little too.... random? I guess if I did that. Like im not sure how repeatable it would be to .1 of a mm For aesthetic parts sure. 

 
Yeah that's true. I guess you don't want to round off precision corners ?

What about UV cured resin for added strength and smoothness to the nozzle?

 
EDcase said:
Yeah that's true. I guess you don't want to round off precision corners ?

What about UV cured resin for added strength and smoothness to the nozzle?
Click to expand...
Uv resin tends to be quite brittle and not very impact resistant. It would also add significantly to the size of the part and again mess up the tolerances. Besides apart from a cuple of overhangs the fdm prints Im getting are more than smooth enough for the intended purpose 

 
Just bought "fulcrum"s cap gun powered grenade. The boy is on it as I'm at work (AT work, not doing a lot, should have brought a broken AEG with me!) So hopefully it'll be printed by the time I get home. ??

 
Darkmikey22 said:
Had this printed for me. 

But the correct simrad rail for the British L115A3 sniper rifle. 

Spent ages smoothing it down, as was made from mfj. 

Then painted it to look metal. 
Click to expand...
What goes on that then?

 
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