Diehead & Chaser Seminar

Guide to Checking Block Wear

Using Your Micrometer

1.

Remove “AA” micrometer bracket from the setting gage.

2.

Remove “AA” barrel from bracket and replace with a stop pin (dowel rod with a flat milled on 1 side).

3.

Move “A” micrometer bracket to back of setting gage (normal location of “AA” micrometer bracket).

4.

Place bracket which now is holding the stop pin on the side of setting gage (normal location of “A” micrometer bracket).

5.

Place block (without chaser and serrated bushing) backwards in setting gage.

6.

Run block in until button on stop of block rests against flat on stop pin.

7.

Position and advance a micrometer so that it makes contact at the block cam wear area.
RSVP Tooling, Inc. - Circular Chaser Thread Rolling System - Diehead & Chaser Seminar - Guide To Checking Block Wear Image

This will allow you to check the difference in the block cam wear. This dimension is not to exceed .0025 within a set of blocks. if the wear on the block is greater than .0025 you will experience difficulty finding and holding proper pitch diameter, and you will experience premature opening of the cup.
 
RSVP Tooling Link Icon Additional Seminar Information

1. Seminar Outline
2. RSVP Tooling, Inc. - Information Sheet
3. Diehead Maintenance Check List
4. RSVP DR Diehead Parts List
5. Using The Micrometer Setting Gauge
6. How To Grind Circular Chasers
7. Setting Chaser Ahead For Grinding
8. Setting The Grinding Fixture
9. Grinding The Chaser

10. Useful Hints On Chaser Care & Threading
11. Problem Solving
12. Guide To Checking Block Wear
13. Micrometer Barrel Certification
14. Suggested Grinds - 4 Per set Straight
15. Suggested Grinds - 5 Per set Straight
16. Suggested Grinds - Taper
17. Chart For Micrometer "AA" Readings
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