Plans for getting the cherub back on the water have been delayed for a little while as I've picked up a ride on the "ILVE 18ft skiff team" for the 2016/17 season.
Watch this space :)
Sunday, November 6, 2016
Carving out new rudder moulds on my CNC router. Section profile is NACA 64012, mould material is MDF, epoxy coated and re-machined.
Machining the foam core with western red cedar timber stringer.
Having a go at some female spreader arm moulds.
A spreader bracket mould. This bracket will allow the spreader arms to be adjustable.
Wednesday, April 6, 2016
Finally got a chance to put the CNC router to work. The first image is a trial run of a goose-neck fitting mould to be made from MDF.
Below is the MDF mould after roughing out with a end mill.
After finishing passes with a 8mm ball mill.
Single coat of epoxy resin prior to sanding. Note: A single heavy voat of resin was sufficient. The surface sanding back to a very nice mould surface. I was certainly impressed.
The component after vacuum bagging.
I used the router to cut a slot for a standard stainless steel Reilly fitting. This was test fitting the depth of the slot.
Using a trace function to cut the profile of the part in the mould. I used small spacers of 3mm Perspex to keep the tool away from the mould surface.
Test fit on the mast :)
The cavity between the mast and fitting will be filled with Q-cells to improve the compressive strength (Vang loads).