Rewrote the Thread Mill Program Generator and added a Simulation button so you can preview the program before running it.

The app now includes the following features:

1. Thread Mill Program Generator
2. Slitting Saw Speed and Feed Calculator
3. Gauge Block Stack Calculator
4. Keyway Broach Program Generator
5. Height Over Ball Calculator for Countersinks and Taper Bores
6. Knurl Calculator
7. ISO Fits and Tolerance Calculator
8. Countersink & Taper Bore Measurement Over Ball
9. Lathe Cutting Speed Calculator
10. Lathe Feed Rate Conversions
11. Lathe Groove Cut-Off Cycle Time
12. Lathe Rough Pass Cut Time
13. Lathe Spindle Speed Conversion
14. Lathe Taper Programming
15. ACME & Stub ACME Threads
16. Whitworth Thread Data (BSF & BSW)
17. Special UNS Thread Sizes with Anodize & Plating Allowance
18. UNC, UNF, UNEF, UNJ, UNM, UNR, UNS, and UN Threads
19. M Profile Threads
20. NPT Threads
21. STI Threads
22. Tap Drill Calculator
23. Thread Data and Thread Over Wire Information
24. Thread Milling Calculators
25. Tapping Speed Calculators
26. Adaptive Feed Control
27. Cusp Height Ball Mill Calculation
28. Ball Endmill Effective Diameter Calculation
29. Mill Feed Rate Conversion
30. Material Removal Rate Calculation
31. Horse Power Calculator
32. Radial Chip Thinning Calculation
33. Mill Cutting Speed Calculator
34. Endmill Runout Calculation
35. Center Drill Dimensions
36. Drilling Calculators and Drill Chart
37. Gun Drill Calculators
38. Arc Calculators
39. Bolt Pattern Calculators
40. Machinist Quiz
41. Custom Macro Variables
42. G-Codes and M-Codes Reference
43. GD&T Reference
44. Geometric Calculators
45. Sine Bar Calculation
46. Hardness Conversions
47. Material Property Search with SFM Data
48. Socket Head Cap Screw Hole Dimensions
49. Surface Finish Calculators
50. Thermal Expansion Calculator
51. Tool Wear Information
52. Triangle Solver
53. True Position Calculators with MMC / LMC bonus tolerance adjustment
54. Unit Converter
55. Material Weight Calculator
56. Scientific Calculator
57. Grinding Equivalent Diameter Calculation
58. Grinding Grit Size Conversion
59. Plunge Grind Calculations
60. Grind RPM Cylindricity Error Calculation
61. Grind Wheel and Workpiece Speed Calculation
62. Surface Grind Calculations
63. Virtual Machining Assistant
64. Reaming Speeds and Feeds
65. Deflection Calculator for Boring Bars
66. Involute Spline dimensional Data per ANSI B92.1 with over wire measurement limits
67. SAE Spline dimensional Data per SAE J499a
68. G76 Lathe thread program creation
69. G84 Tap cycles can now be selected from the thread section
70. G81, G82. G83, & G73 Drill canned cycle creation
71. Rectangular hole patterns & BHC pattern Coordinates can now be exported to Drilling & Tapping cycles
72. Coolant Concentration Calculator
73. C-Axis Rotational Feed Conversion Calculator
74. Bandsaw cut time calculator
75. Link to Desktop - Use your Apple subscription to unlock access to the Web app: www.CNCmachinistCalculatorUltra.com
75. Machinist Tip of the Day - Over 1500 tips for machinists to be saved or shared
76. Machining Formula Library - we’ve added 172 machining and metalworking formulas to the app.
77. 2D CAD & DXF Generator -  You can now draw, modify, measure angles, snap to intersections, and export CNC-ready DXF files right from your phone.
78. Tolerance stack mini game - Race the clock to inspect parts! Quickly compare measurements against tolerances and choose to accept, rework, or scrap
79. Now you can draw lathe CAD profiles and turn the CAD into a rough and finish canned cycle with or without cutter radius compensation.
80. Involute spline data per ISO 4156
81. G-code program simulator
82. Spur Gear data