Just a heads up for anyone with a Tokyo Marui FN45 fractured slide. Some one has produced a 3d pintable file for a replacement slide https://cults3d.com/en/3d-model/various/tm-fnx-45-slide ( I have no affiliation with creator).
Anyone with a fractured TM FN45 slide
- Thread starter BigStew
- Start date
It is a bit of a faff to get it working but better than no slide.
If anyone has a slide that's not cracked take the metal part out the slide and JB weld it in supposedly that will fix it even once it's cracked but not broke off
mightyjebus
Members
- Dec 11, 2015
- 947
- 1,625
It's a design flaw if you don't use buster/134 gas as it was designed for. If you use other green gases and higher temperatures the front end can snap off. TM knew it might be an issue and there is a metal plate inside the top side, near the front sight, to counter it but not for higher PSI usage.
I designed a slide (not the same guy in the link above) for the FNX and it's about 85% done as other things have gotten in the way. Mine works and can be printed on FDM printers using PETG-CF.
I designed a slide (not the same guy in the link above) for the FNX and it's about 85% done as other things have gotten in the way. Mine works and can be printed on FDM printers using PETG-CF.
- Thread starter
- #5
Nice bit of design work there, I am going to nit pick. I really dislike it when people say TMs have design flaws because they break if you use over powered gas. That's like saying a a petrol powered engine has a design flaw because won't run on diesel. TMs do what they are designed to do and its general a sign of good design and build quality that they can run on over powered gas for any length of time. Any way thank you to anyone doing things like this to keep airsoft guns going.
What software are you using for to design the slide?
mightyjebus
Members
- Dec 11, 2015
- 947
- 1,625
Normally I'd agree but in the FNX it's a weird one. They knew that the slide would be stressed enough on 134 that they added a metal plate to counter the effect and I'd imagine that even on 134 some will break over prolonged use, which is unusual for TM.
I've went old skool and I'm using Sketchup 2017 for this one:
Things to do is add the trades and probably make the ejector a separate piece.
I've went old skool and I'm using Sketchup 2017 for this one:
Things to do is add the trades and probably make the ejector a separate piece.
- Thread starter
- #7
How is sketch up compared to fusion I couldn't get to grips with it?
mightyjebus
Members
- Dec 11, 2015
- 947
- 1,625
fusion is better for organic shapes whereas Sketchup is more architecture focused but can do complex curves with a bit of f;ing around. I started out years ago using sketchup hence the preference to use it sometimes but fusion is good, just takes blooming ages to master and I'm no master at fusion. I've did a few complex projects in it and need to spend more time with it especially since I now have a desktop CNC and fusion can work with it.
Whats you plan for print orientation? Managed to get the slide I linked printed in pla to hold up to testing but every other filament I tried just broke along the layer lines.
I tried abs,ASA, petg, ASA CF and pa6 cf.
Also did the thought of CNCing one on your home CNC cross your mind ? Asked a local company near me and they wanted £1000 for a single slide unless I ordered 100 they were ridiculous money
What happens is overtime the metal re-enforcement comes loose and then the plastic hits when the slide reaches full travel. So if your metal re-enforcement is loose it's a matter of time. Mine lasted me 4/5 years of light use till it cracked.
If you JB weld it in then I'm theory it should never crack the front and even once it's cracked if it's JB welded in it should survive
mightyjebus
Members
- Dec 11, 2015
- 947
- 1,625
I printed the slide horizontally to give the most strength with the supports done as organic which leaves the least mess. I'm not skilled enough yet for CNCing something this complex but maybe in the future, who knows.
No issues with layer adhesion? That was the main issue I found in general, albeit a different design although I'm sure it's fairly similar
mightyjebus
Members
- Dec 11, 2015
- 947
- 1,625
No issues so far. I did increase the length of the slide by 1 mm to reduce the impact on the front end which seems to have helped.
Well if you want any other opinions or anything on the slide or testing let me know happy to give it a try. The slide linked above is good but not perfect so happy to try out another version.
Similar threads
