Mac's short answers

Mac & Group:

Here's a real brain teaser from MCI Jim Valle. Before trying to answer his questions, give it lots of thought....might even try to draw it out on paper. Remember....he's talking about casting stroke as defined as the path taken by the hand with no casting arc (which we'll consider as the change in angle of the butt section of the rod from the beginning to the conclusion of the cast.)

Gordy

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Hi Gordy and Group,

I would like to pursue Laurence’s question a little deeper because it gets to the true understanding of the path of the rod tip and related casting stroke.

This is a good MCI line of questioning. (Headache medication is allowed… in moderation!!)

Your (mathematical or engineering type) student proposes the following thought process and question.

Assume a 9’ rod held in the hand at 3’ above the ground.(no line extended)

Move the rod straight forward with no arc and we have 2 imaginary parallel lines (no rod load, hand or stroke length at 3’ and rod tip at 12’ (9+3))

Now string the rod and allow enough past the tip to load the rod to some extent let’s assume a total deflection of 6”.

Now move the loaded rod forward the rod tip has deflected 6” and thus the tip now travels at an effective length of 8’6” above the hand in a SLP. (Jim....we must emphasize, here, that the tip travels AT a height of 8'6" above the hand in a SLP......not a trip travel distance.)

When the stroke stops and the rod unloads the rod must pass through the physical 9’ length at RSP.

How can you maintain a SLP of the rod tip?

(Concise answers required! No more than 3 sentences per question!)

How would you answer this student?

caster must have the hand path dropped while applying force smoothly.(how much depends on the amount of line.)

2. How would an intermediate/advanced artistic, poet type student ask the same question?

how would slp be possible with no butt rotation?

3. Obviously a beginning student wouldn’t pose the question with this much detail however it is possible for a beginner to ask a question about this area of the cast. How do you think a beginning student might ask (word) his/her question?

Interesting! could the rod remain straight during the stroke and still achieve a cast?

gordy,

my long answer would be to go into the box exercises for explaining slp-changes in hand path plus the line placement help to enforce this.

is that short enough? thanks mac

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Mac....

PERFECT !!!!!!!

All MCI candidates should read about your box diagrams in you text book....CASTING ANGLES by Mac Brown. (That's how I learned YOUR language of the time.)

Gordy