Valkyrie Designs - Lockheed Electra Junior

[Hubert Boillot]

20 hours ago, Jim Barry said:

Not as detailed as yours, but it's the same shape front view.   I used your image  as a canvas to make mine. Thx

 

 

The two spigots on each side of the sump are actually the screws to hold the sump in place (on the top of the sump there are wings mirroring the ones on the crankcase support). So, if it’s not too complex, you should remove them …

As for flush rivets reproduction, not having spent enough time learning Fusion, I do not know how easy it would be to replicate a function that projects a 0.1 mm deep tube on the surface of the wings (that’s how I envision producîng them in my layman’s way ) 

Hubert

Edited August 19 by Hubert Boillot

[Cicchino]

Jim, 

 

Thanks for the video! I've been able to use that method successfully for raised rivets on the rudder my FM-2 conversion; thankfully the Wildcat is a treasure trove of raised rivet fun!

 

I still dread the sunk rivet process; I've had to make those on the Meteor F.3 to match the HKM donor kit and it is tedium defined. 

 

Regards

 

John

 

 

[RCPlym]

2 hours ago, Cicchino said:

Jim, 

 

Thanks for the video! I've been able to use that method successfully for raised rivets on the rudder my FM-2 conversion; thankfully the Wildcat is a treasure trove of raised rivet fun!

 

I still dread the sunk rivet process; I've had to make those on the Meteor F.3 to match the HKM donor kit and it is tedium defined. 

 

Regards

 

John

 

 

 

Not too bad in the freecad process overall. Largest diameter item is 0.4mm.

 

[Jim Barry]

Rivet testing print went awry last night, but it was not that bad. I see promise. I might try the true flush rivet test too with sunken tubes cutting into wing surface. 

 

Would love to see that printed, Rob

 

 

[RCPlym]

17 minutes ago, Jim Barry said:

Rivet testing print went awry last night, but it was not that bad. I see promise. I might try the true flush rivet test too with sunken tubes cutting into wing surface. 

 

Would love to see that printed, Rob

 

 

 

I shall oblige, but I need to adjust the depth of the 'flush' rings as I suspect 0.2mm is too deep. 0.1 may do the job.

I was lazy and didn't name the bits so it'll take a bit of finding in the tree - half hour to find, 3 seconds to adjust! 🤣🤣🤣🤣 

[Hubert Boillot]

When working on the Grumman Duck conversion parts, I found that 0.1 mm was marginal (read barely noticeable) for panel lines. It might be enough for figuring flush rivets, but I’d probably go for 0.15 mm.

 

Hubert

[Breaker]

6 hours ago, Cicchino said:

Jim, 

 

Thanks for the video! I've been able to use that method successfully for raised rivets on the rudder my FM-2 conversion; thankfully the Wildcat is a treasure trove of raised rivet fun!

 

I still dread the sunk rivet process; I've had to make those on the Meteor F.3 to match the HKM donor kit and it is tedium defined. 

 

Regards

 

John

 

 

 

Make a test piece where you do an asecending amount each time - 0.2, 0.3, 0.4 etc for raised/recessed rivets and the same with panel lines. can then use that as a IRL reference for when you're trying to match a kit. 

[RCPlym]

1 hour ago, Hubert Boillot said:

When working on the Grumman Duck conversion parts, I found that 0.1 mm was marginal (read barely noticeable) for panel lines. It might be enough for figuring flush rivets, but I’d probably go for 0.15 mm.

 

Hubert

 

I'm thinking the same - 0.15 to 0.17 and a revolved 'v' for the cutter profile for flush rivets.

 

Test print underway - 11hrs and a bit!

Edited August 19 by RCPlym

[Jim Barry]

We have a winner. This has a coat of primer too. Still need to implement , but I can deal. The lines are already on the wings. 
 

 

[Hubert Boillot]

It looks like you nailed ( more like "rivetted", technically) it, Jim ! I can't wait to see this one ready !

 

Hubert

 

 

 

 

Edited August 20 by Hubert Boillot

[mozart]

The more I see of your progress shots Jim, the more excited I’m getting! 

[Hubert Boillot]

I guess that's what one calls "a riveting view" ....🤔

 

Hubert

[Jim Barry]

 

Ok, cool. Getting the flush rivets onto the actual wing and it's going great. If you have nothing to do, really and want to see 192 rivets put on in 3 minutes, see the youtube vid here.  There are pauses waiting for the computer to deal with the task. It's apparently a lot to combine 192 objects with a cut function, and I get it.  As you know, I'm a real fan of traditional scratch building and this is not impossible or anything to do by hand, but not in 3 minutes and not nearly as perfect. I would never traditional scratch build this subject. It's made for 3D. 

 

 

 

 

Edited August 20 by Jim Barry

[RCPlym]

26 minutes ago, Jim Barry said:

 

Ok, cool. Getting the flush rivets onto the actual wing and it's going great. If you have nothing to do, really and want to see 192 rivets put on in 3 minutes, see the youtube vid here.  There are pauses waiting for the computer to deal with the task. It's apparently a lot to combine 192 objects with a cut function, and I get it.  As you know, I'm a real fan of traditional scratch building and this is not impossible or anything to do by hand, but not in 3 minutes and not nearly as perfect. I would never traditional scratch build this subject. It's made for 3D. 

 

 

 

 

 

They will be better lined up than on the real thing! 🤣😂😂 

 

It really is impressive to see how these things just go from one original and appear in huge multiples! 

 

Now back to more concave/convex curves combined with planar straights and curves fillets for me! 🤣🤣🤣🤔😭😭😭😭 

 

 

Edited August 20 by RCPlym

[Jim Barry]

Uggh. Rough day at the office.  The file was bogging down so badly it was taking over 10 minutes to process a new body, sketch or anything really and for a while I was tolerating this until I just couldn't take it anymore !! and had to pull on a safety parachute here to bail this problem out. See, all these hundreds of cuts in the wing are actually hundreds of complex geometries and storing them in the timeline history was just getting worse and worse the more rivets I put in. I thought I was making progress, I was just burying myself deeper. The fix to this problem, besides just quiting, is to delete the timeline history. It's a pig. A very convenient pig when you need to go back and change things, but at this point that convenience is killing me. So. I could go back to rivets as bodies which seem much nicer to the CPU or I can delete the timeline. I'm going to delete the timeline.