Dr. Zooch Saturn V Build Step 2A Base Coat Prep

Step 2A has you dry assemble the body tubes and balsa adapters for a white primer coat.
I don't feel a sanded primer coat would fill the balsa grain on the tapered section of the Apollo adapter. Carpenter's wood filler was used on the (exposed) tapered section.

Notice I painted on the edge but not onto the shoulder.

While the CWF is still wet, the shoulder was set into the T-50 S-IV tube.

The tube was turned against the CWF making a sharper edge on the shoulder.

The CWF that was forced up along the edge will be sanded off.

Don't get CWF on the section where the Service Module wrap will go.
That might increase the diameter of the upper adapter and the wrap may not fit.

Set it over the card stock print to make sure of the wrap height.

I used my new sanding block for the first time.
It is very flat and worked well smoothing out the CWF.