dutik Posted September 11, 2019 Share Posted September 11, 2019 (edited) Dear friends, got some trouble with a near-completion LSP model: I misaligned the prop axle. I replaced the prop axle with piano wire and glued the prop with superglue onto the engine front. Well, I misaligned the prop axle. Problem: The whole model, also engine and prop are fully painted and wheatered. There is a spinner on top, it is sitting somewhat inside the cowling, so no room to use some kind of saw or nippers. And the axle is not of styrene, but of steel... Brute force is no option. Sawing/nipping is no option. Freezing is no option (the model is full of PE and other stuff, also painted). Maybe I am able to drop some debonder between spinner and engine? This means repainting of the engine, but hey... Any other ideas how to remove the prop/spinner assembly withput destroing the whole model? Regards - dutik Edited September 11, 2019 by dutik Lothar 1 Link to comment Share on other sites More sharing options...
Ryan Posted September 11, 2019 Share Posted September 11, 2019 Picture please. Link to comment Share on other sites More sharing options...
dutik Posted September 11, 2019 Author Share Posted September 11, 2019 It's the Texan left front: Regards - dutik Out2gtcha 1 Link to comment Share on other sites More sharing options...
Out2gtcha Posted September 11, 2019 Share Posted September 11, 2019 Hey Dutik, If you do decide to use de-bonder, just be EXTRA careful with it, and I would suggest trying some out on some of the plastic from the kit before every trying it on your T-6............... I got a splash of CA on the vertical fin of my RAAF P-40. I used de-bonder on it, and it was only on there for a second or two before it started hazing and melting the plastic. This is after wiping it off immediately after seeing it: dutik 1 Link to comment Share on other sites More sharing options...
Ryan Posted September 12, 2019 Share Posted September 12, 2019 I can’t see a way to fix without destruction. Is there no way to twist the prop gently till it gives? D.B. Andrus 1 Link to comment Share on other sites More sharing options...
1to1scale Posted September 12, 2019 Share Posted September 12, 2019 Debonder is basically acetone, don’t use it, like Ryan said, try twisting until it snaps loose? Out2gtcha 1 Link to comment Share on other sites More sharing options...
dutik Posted September 12, 2019 Author Share Posted September 12, 2019 Well, this is piano wire. Much harder than just plain steel wire. Any styrene will crumble away long before. No chance to push it into the correct position. As for the debonder - I use nitromethane, not acetone. Nitromethane is used to fuel RC engines or to boost full size combustion engines. Maybe I will be able to wrap seal the engine and col insides with Tamiya tape to apply some debonder. I ponder this option. Regards - dutik Link to comment Share on other sites More sharing options...
109 Posted September 12, 2019 Share Posted September 12, 2019 (edited) CA normally starts to break down at approx +80 °C. So try to boil the prop assembly in water. No warranty however! :-) Just noted ... you can´t remove the prop from the model ... hmmmm Edited September 12, 2019 by 109 Link to comment Share on other sites More sharing options...
BiggTim Posted September 12, 2019 Share Posted September 12, 2019 (edited) Honestly, I think you're stuck with brute force, sorry. That's a bummer. Edit: Wait a sec.. could you gently remove the entire engine and cowl from the airframe, and drill through the back of the engine until you reach the shaft? Maybe you could push it out the front once the back is free? That way any damage would be hidden inside the cowl? Just a thought. Tim Edited September 12, 2019 by BiggTim D.B. Andrus 1 Link to comment Share on other sites More sharing options...
D.B. Andrus Posted September 12, 2019 Share Posted September 12, 2019 Since CA is weakest in shear, I'd use twisting force to break the bond. If you can twist the prop off then you can apply proper force with pliers to the wire (if it remains embedded in the engine) HTH, D.B. Ryan 1 Link to comment Share on other sites More sharing options...
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