| a) | proper alignments: |
| i) | dimensions: |
| 1) | height - fist at eye-brow level |
| 2) | depth - striking arm extended to depth of Invisible Box |
| 3) | width - striking arm extended to opposite shoulder |
| 4) | execution angle - forward at 45 degrees |
| ii) | body alignments: |
| 1) | hand: |
| A) | rotated to be diagonal forward |
| B) | directly vertical (in-line with elbow) |
| 2) | wrist kept straight (not bent up / down and / or side-to-side) |
| 3) | elbow directly below hand (vertically in-line) |
| 4) | shoulders - relaxed |
| 5) | upper body / hips - Neutral Bow rotation |
| 6) | legs / feet - Neutral Bow rotation |
| iii) | Point of Contact - side of forearm |
| iv) | stance - Neutral Bow |
| b) | proper formation: |
| i) | hand |
| 1) | closed to standard fist |
| ii) | forearm |
| 1) | kept vertical |
| 2) | pointing forward at 45 degree angle |
| iii) | elbow: |
| 1) | directly below hand and forearm vertically |
| c) | execution: |
| i) | Method of Execution - Hammering |
| ii) | execute directly to target |
| iii) | improper execution: |
| 1) | incorrect speeds / methods: |
| A) | executed too slow (transforms into push with forearm) |
| B) | executed too fast (stance rotation unable to keep up with strike) |
| C) | executed too tense (unable to achieve proper 'snap' of strike) (strike looks 'pushed' out) |
| D) | strike not tensed at Point of Contact (improper timing / never tensed) |
| 2) | incorrect alignments / angles: |
| A) | elbow not properly anchored |
| B) | forearm not kept vertical |
| C) | not executed forward at 45 degree angle |
Form Specific
| a) | Common execution errors: |
| i) | strike executed as thrust (not hammer) - due to cocking weapon too low |
Example of a proper inward, vertical forearm strike (left)
Example of proper inward, vertical forearm formation
Example of improper inward, vertical forearm formation / alignment
not vertical, under / over rotated
Examples of improper inward, vertical forearm execution
improper width - wide / narrow, height - high / low, depth - close / far,
shrugged shoulders