Thread Tools
Oct 24, 2019, 08:50 AM
Jer. 29:11
jeffsch's Avatar
Originally Posted by Jay B. Scott
Thanks for the link, birdofplay. Yep, those are them.
I have a "magnet build plate" under my cutting mat; it's a sheet of galvanized sheet steel, and these angle magnets stick well to it.

They are close to square -- each plate is very close, no doubt, but in the ones I have, the pair of plates that make up each magnet are not precisely aligned.
Sign up now
to remove ads between posts
Oct 24, 2019, 09:15 AM
Jer. 29:11
jeffsch's Avatar
Originally Posted by birdofplay
Here's a freebee contribution to the Project.

All the individual and duplicated parts layed out on MPF
Nice layout!

I see the sheets have a dotted line about 39". Does that correspond to your standard size box?

Some friendly suggestions:

- Sometimes MFP sheets have a better finish on one side of the foam than the other. Consider flipping one pair of each style of the tip tank templates so you can use the best sides.

- The spar slots in the KF step and wing are only 1/8" deep (not cut all the way through). The slots are offset which allows for a single 3mm carbon tube or two 1/8" dowels.

- Since you don't need an elevator pushrod slot on both sides of the fuselage, maybe cut these only 1/8" deep and open up the one you need at the time of assembly. Same for the rudder pushrod slot in the fuselage top.

- The spar slot in the horizontal stabilizer is for a carbon flat. Maybe cut this only 1/8" deep so you can use a 3mm carbon flat (as I did) or make it deeper at the time of assembly if you want to use a wider carbon flat.

- The rudder is optional, so you may wish to scribe (vs. cut) the rudder line on the vertical stabilizer.

I'll take another pass at the plans to clarify these details.
Oct 24, 2019, 02:46 PM
Retired CAD guy
birdofplay's Avatar
Thanx Jeffsch,

Yeah, those lines are for my boxing and as a guide for conversions from designs,
previously layed out on DEPRON.
Box width is nearly 18" so I have lot of flexibility.

My usual modus operandi is to make all dual parts by MIRRORING one of them.
And I cut the sheets GOOD SIDE DOWN so the cavities or partial cuts are
on the INSIDE.

I believe I have done that on the Fuse sides and the rest as well.
I did mirror the tank parts n the 2nd sheet to be sure.

Per your suggestions I have changed the COLOR of the slots for half depth cuts to GREEN..

So now the question ...

I was contacted AFTER I put up this layout by an RCG member re cutting.
I told him to ask you for permission 1st.

But, as long as I am here making corrections, I might as well ask directly.

Could I get the OK to cut at least ONE for that RCG member ?

Best regards

Bob @ Hoosier Cutout Service
Oct 24, 2019, 03:48 PM
Jer. 29:11
jeffsch's Avatar
Bob, let me chat with Ken and get back to you.
Oct 24, 2019, 09:06 PM
Retired CAD guy
birdofplay's Avatar
No hurry, whatever.

I'm good with whatever you guys decide.

I put my layout up freely and you guys could certainly use it yourselves.

I was retired when I started CNC cuttings back in 2005 and
I am STILL retired and not trying to make a living off of any of this CNC stuff.

Let me know what you've agreed upon.


Last edited by birdofplay; Oct 26, 2019 at 03:22 PM.
Oct 26, 2019, 12:43 PM
Jer. 29:11
jeffsch's Avatar
Clarified a few points on the plans in Post #66. (Thanks Bob!) And added recommended CG: 1.4" behind leading edge of the wing.
Oct 26, 2019, 06:51 PM
Retired CAD guy
birdofplay's Avatar
Well , we'll see how this go's.
I've attempted to do some mods to the layout, not having a specific list of changes.
Added the CG fer sure ! ;^}

Having lots of material left I've duplicated several of the parts as a precaution.
After some more scanning of the new plans I will update my layout .

Eh ... this IS the Scratch Building forum , so I am sure that Builders will be able to
Go with the Flow even with minor differences.
Oct 27, 2019, 06:12 PM
12th Pursuit Squadron
TheAeronut's Avatar
Hey, kits often are a collection of parts and a suggestion of how someone thinks the plane should be built. Many minor changes to the parts might not even be noticed.

Oct 28, 2019, 10:36 AM
Retired CAD guy
birdofplay's Avatar
Now that is THINKING like a scratch builder.
Nov 05, 2019, 10:03 PM
Retired CAD guy
birdofplay's Avatar
I cut the 1st set of parts today.

Then I updated my web page for those interested in a set of those parts.

I'll get some pix of those cuttings up tomorrow, as it's gotten late for me. 10:00PM +

C U L8r


Quick Reply

Thread Tools