Tillering block build along

[hera]

:p      
 

 

[hera]

 

[hera]

 

[hera]

 

[hera]

 

I think it will work well.

[sidebuster]

Hera hello again. I remember back some time in November of last year, sending you an email showing you a pic of what a tillering block is and how it is used.  Your reply to me was as follows:

Here is the message sent by hera:

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"Wow,thank you very much.I learn a lot from your PM.I will try to do what you teach me in my next bow."


Here is the pic that I had sent you.

 


I am so glad you are making this build along.  You are very good in making build alongs and your details are just excellent. People appreciate you input.    Good Luck.

[hera]

Hey Saul
Yes,I always remember you sir.And thank you again.

[sidebuster]

You will need a tillering station to put the blocks on the bow.  You bow is out of the heat box and you have sanded the excess glue and have now cut the bow limbs to the desired length. Note no profling using your stencil has been done to this point.   You use a string that is close to the length of the finish product string and put the tilliering blocks on the string. You put one of the blocks on the bottom limb and use the tillering station to put on the other block.  You bend the bow around the pegs to string the bow.   I found a place on my garage that I mailed or screwed two 2x6 pieces double then and in strategic places drilled some holes to put in some large oak dowels.  One of the dowels needs to be in the vicinity of the center of the riser and the other close to the bottom end of the lower limb.  I then put those rubber rollers used for boat trailers on the dowels so as not to mar the wood on the bow.  You try to put the blocks in the center of each limb, eyeball.  After you got the blocks on  then look at the limbs to see if either limb is pulling right or left of the block.  If they are then you move block right or left until as needed until limb is straight. Once you got the blocks where you want them you mark each side of the tiller block and 1/2 is the true center.   From a science point of view you are looking for the true torsional center of the bow.  If you had measured the center of the limbs with a ruler or caliper and then used the blocks  you might end up showing you that the centers you measured using the ruler or caliper might not end up being the true centers as opposed to using the blocks. One improvement to the blocks is to drill a hole on the outside of each block and tap it so as to have a set screw you can screw in onto the limbs to hold the blocks securley to the limbs. Otherwise you might have to shim the blocks so they do not slip off the limbs.  I personaly pull the bow while on the tiller station with the blocks on very carefully to see if either limb is pulling right or left of true center.  This is the way I do it and there are porbably many other good ways or better ways to  on how to use the blocks  Here is pic of my tillering station

Knowing Mr. Hera he will probably come up with his own system and maybe something  better.  Very talented man Mr Hera.

   

[hera]

Thank you for your detailed instruction again.  I have read it word by word.  It inspired me a lot.  I really appreciate it.