This is a four inch scratch build loosely based on t' Wildman Punisher.

T' red and black fiberglass Wildman Rocketry parts below will be used in this build.  T' blue rocket below is based on a 4 inch Wildman Punisher kit, and be t' inspiration for t' current build.   

T' purpose o' this build is t' give me another 4 inch diameter rocket t' brin' t' a launch that can burn 75-98mm motors.  I decided t' make a few tweaks relative t' the  previous Punisher Style build. Blimey! T' changes bein' slightly smaller fins made o' solid carbon fiber with t' fins bein' moved up t' body tube another 1/2 inch or so.  T' fins on t' blue rocket have picked up a few knicks from hard landings hence t' changes. T' new fins will be cut from 0.200" twill weave carbon plate made by RockWest Composites.

T' nose cone I'm usin' for this build is a 6:1 VK shape from Wildman (black nosecone at top o' photo below).  It is impressively long.  T' blue nose cone below be t' original fiberglass infused plastic nosecone that came with t' Punisher kit in me previous Punisher Style  build mentioned above.  T' original plastic/glass Punisher kit nose cone is no longer made. Unfortunately t' blue nose cone was damaged when it got wedged in a tree and cracked from tuggin' on t' shock cord in order t' free it from t' tree.   Too bilge-suckin' t' plastic cone was damaged because it had a nice shape and I preferred it t' a fiberglass cone.  T' gray primer cone at t' bottom o' t' picture below be t' Wildman 4:1 fiberglass cone that I got t' replace t' damaged blue nose cone. 

As usual, I will start t' build with t' fins.  I cut t' fins out usin' a combination o' chop saw, arrr, and a Dremel. Here are a few pics.

After cuttin' out t' fins, me bucko, I needed t' match sand them.  I taped t' fins together with double-sided tape and went t' work with a belt sander.

I used a router, and an incline t' make t' bevels on me fins as shown below.  T' router bit is a straight cut bit and 5/8" in diameter.

It is time t' bond t' fins t' t' body tube. Begad! I'll be usin' Loctite E-120HP epoxy like all the  kids are usin' these days.

T' fins went on somethin' like this:

I used t' typical fillet method as follows:  Tape off fillet area, fill t' channel with epoxy, shape t' fillet with somethin' cylindrical, ya bilge rat, remove tape before fillet starts t' cure.  I used a 38mm propellant grain t' pull t' fillet.  T' Loctite E-120HP epoxy worked perfectly as can be seen.  

Almost done. Buildin' fiberglass minimum diameter rockets is about t' same as buildin' an Estes E2X.  

One set o' fillets turn out a little lumpy, so I mixed and applied some Bondo:

T' primer went on like this:

Paint:  A combination o' carbon fiber metallic, and sublime green.

Paint

Here is Build # 1 and 2 side-by-side.

I was plannin' t' launch this on a K680R, but t' clouds came before I had it ready, reducin' t' waiver.  So, until next time here are a few pics.

9600 feet on t' Aerotech K680R.

Marsa, Easy Mini, shiver me timbers, and TeleGPS:

Launched again on an Aerotech L400W:

Video Here:https://youtu.be/oZL9Y7rMXfc