As said, my knowledge on this subject is not extensive. Yet, I would probably plan where the threads were to go, reinforce the area when planning my lay up, then bond threaded sections into the finished riser with suitable epoxy. It is high precision work. 

The bladder mould method seems really good, however the finally cf component would be hollow. This component requires screw thread holes. with the component being hollow there would be no material to thread into. What would your suggestions be on this?

Not so much discouraging as advising the difficulties you will face. By all means I know the desire to make is big. That's how i got into this whole composites thing as well.

There would be several ways to tackle it in my opinion...

The solid block sounds a little heavy and over-engineered, as that kind of strength is simply not required for such an application imo. It would require several hundred layers (dont quote me its an estimation) to reach a thickness of around 15mm which would be about right for a riser. These could be layed into a mould and infused, close to the final shape.

another option would be to create both halves and subsequently bond them, with a hollow core.

Yet another option, and possibly the best and most professional that could still be done outside of an autoclave, would be a 2 part closed mould with an inflatable bladder inside. The mould would have to be designed for strength, ideally machined from billet aluminium, although a composite mould could also be used. Best bet would be out of autoclave pre-preg with a bladder, cured in a suitable oven.

I'm sure others will chime in... im gearing up for a bladder mould project, yet have never attempted it personally. Only read some about it.

cheers

I appreciate your efforts at trying to discourage me from going ahead with this, however at this stage I am simply asking how to attempt such a task. I'm well aware of the commercially available carbon fiber bows,  however I wouldn't be here seeking your guidance if that's the route I wanted to take

You suggest making a mould to create a solid block out of CF, are there any suggested best practices for this, or somewhere you recommend I can read further on this?

thanks for your time so far guys

If you are a complete beginner attempting such a mammoth project will be difficult, likely require substantial trial and error and cost you alot of money in the process. Thousands in materials and time.

Good luck if you choose to attempt it.

Otherwise, if I were you I would go for a top of the range carbon compound from a leading bow-manufacturer...

http://www.hoyt.com/compound_bows/details/carbon+element+g3

Will save you some headaches and most likely money as well.

cheers

how you would need to make a solid object? make moulds to create a solid block out of CF (by adding many layeres on top of each other) then CNC-cut your part out of the solid picce of CF you've made...

The only information I've picked up on cf is just by watching the carbonmods youtube channel, so thats creating a mould, and how to apply the cf. However I'm still lost as to how you cf a solid object, most of the examples on the carbonmod channel are covers or shielding to things. I assume I would need to do the mould in two parts, and attach the two cf parts together? Any suggestions would be great

I am no expert in bows, but you are so I agree with you Do you have some basic info how to cf?

~~~Everytime I hear sound of demoulding part I have eargasm~~~

Hi Wojtepanjk,


Other archers of this type of compound bow, have been experimenting with other materials, and one such example is that the limbs have been made from aluminum only. That's not exactly a flexible material, however the bow does work. I'm looking to make the bow as light as possible, the carbon fiber wouldn't be for appearance sake. Also the riser is not required to be flexible, its a rigid component, currently made of aluminum, why couldn't the riser be replaced with a carbon fiber version? 

Hi!
I am afraid it is not that easy, bows have to be strong but flexible and the have multiple layers of sorts of materials like balsa, wood, glass, kevlar, carbon. Without laboratory I think there is no way to produce serious, working bow. You can always buy some cheaper one and skin it with cf and pretend it is all cf...
Bye
Wojtek from Poland

~~~Everytime I hear sound of demoulding part I have eargasm~~~