Be careful with cocobolo, I got sick from it and stopped using it. Getting your hands on good shaft wood was always a challenge. With today's demand for CF shafts though it probably makes cuemaking for the beginner easier as turning good shafts seemed to be the most difficult when you start..
I should add that the dust from cocobolo can find its way everywhere. If you're working in your house be very careful with it. It may not affect you but it might affect other people. One of your most important investments is a good dust collector.
Tim Scruggs got very sick from working with certain woods as well as Super glues. Tim was experimenting with super glue finishing. He told me he almost killed a customer who came in the shop at the time they were sanding the finish and dropped almost instantly. He had to be taken to a hospital.
You need to learn as much as you can about woods you are working with.
Allergies to wood dusts are becoming more common today as exotic woods from around the world have become easier to obtain. Websites have sprung up offering a wide variety of species delivered straight to your doorstep. But along with these beautiful woods come a host of chemical compounds, many of which have yet to be identified. These include tannins, quinones, lignans, terpenes, sterols, glycerols, resin acids, waxes, alcohols, alkaloids and others.
In the rosewoods such as Mexican cocobolo, Brazilian kingwood and African blackwood, the key allergens are the quinones that are toxic biocides made to protect the tree against fungal and microbial invasions. These biocides also fool the immune system into thinking they are deadly pathogens worthy of attack. In some people, continuous exposure to allergic compounds can result in escalating reactions from dermatitis and bronchitis to more severe asthmatic reactions and even life-threatening anaphylaxis. It's not a matter to be taken lightly.
