Hull Mold Manufacturer's List?

I want to have a rotating mold made for 17' powerboat hull. I'm putting together a list of manufacturers but I'm probably missing some good ones that a google search isn't finding.
Thomas Register is surprisingly useless for this. Is there a handy list of US mold manufacturers available somewhere? I'm in MD so the East Coast is preferable.

 

Stuart Composites 954-648-1896 in Jensen Beach FL

 

North Carolina | Rotationally Molded Plastic https://www.rotationallymoldedplastics.com/category/north-carolina/

 

We build tooling.
mic-sc.com

I typically would not do a rotating mold for a boat that size, production cycle times are too slow to be profitable.

 

Thanks. Just for clarifying, are you saying a male mold for this size is preferable?

 

still a female mold, but think more like a bathtub.

With a rotating mold, the cycle time is doubled because each half of the molding must cure before being flipped, otherwise the wet material will fall down.

The hardware and framing required to achieve rotational capability will also add a +30% cost to toolmaking.

I want my customers to be profitable and to achieve maximum dollar velocity. I can’t be used for your next project if you go bankrupt.

We have an existing customer in the Annapolis area we do production work for.

 

I seem to be missing something here: Why does the rotating mold have twice the curing cycle time of the "bathtub" mold? Wouldn't the bathtub mold need the same amount of curing time as the rotating mold?

Good point on the extra cost of a rotating mold. I didn't realize the extra cost was that much.

 

Would this mould be for composites or HDPE?

 

Nothing exotic. Polyester resin and fiberglass matting/roving with some coring for stringers/transom.

 

you can only laminate half the mold at a time.

if you rotate it before curing, all of the material will fall down.

non-issue with traditional mold.

 

There’s more to it than that, how easy is to reach the centerline….a rotating mold makes that much easier……what’s the laminate schedule - than can drive the number of cure cycles……etc etc
At that size I’d go with a rotating mold, you can always use it flat!
For tooling. Marine Concepts in Sarasota FL. Marine Concepts Design Concepts – The Fiberglass Tooling Experts https://dcmc-us.com/

 

then you’re paying a significant premium for something you’re not using.

also, it will upset the ergonomics of the molding, which will reduce quality.

 

And laminating a near vertical topsides towards the laminator will have no impact on quality…….look at your website, a small mold that rotates!
I just think there are more factors in play that ‘fewer cure cycles’

 

That mold set was over $120k and killed two ownerships from lack of profitability due to excess labor requirements.

I was hired to do consulting on how to make it profitable.

 

Curios, was it able to be made profitable?