From the stock square of sawn 75 mm Douglas Fir we have 5 mast made with the sheave slot machined and the sheave spindle ready to fit. I use 12mm 316 Stainless spindles for the sheave and domed cover caps fitted externally to cover the spindle hole exit points. Before fitting the sheave I tape up the lower slot face surface and fill the slot with thinned varnish, allowing the viscous varnish to impregnate the oped cut grain of the slot. This is left in the slot of several hours before draining off the surplus varnish.
When dry and cured the sheave can be fitted followed by the external domed caps. With a little more light prepping the mast is ready to be set up between 2 centre screws in a horizontal positioned so it is free to be turned when in the process of being sprayed.
I apply 6 thinned plus coats wet on wet in the heated spray booth, let to cure for several days then repeat the process after prepping for the final finish.
You can check out my workshop Blog for more on making the masts. You can also check out the product page for more information. All masts will go out fully varnished finish either collected or by our own delivery.