diff --git a/README.md b/README.md
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--- a/README.md
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 # trizero-plus50-mod
 
-A little modifications for Tri-Zero Plus50 project
\ No newline at end of file
+A buildlog of Tri-Zero Plus50 project with my little modifications
+
+Based on [tri-zero project from zruncho3d](https://github.com/zruncho3d/tri-zero).
+
+
+### A/B drives changed to Nema17
+![Front view](img/frontview1.jpg)
+Thanks @TheMrFish for [this mod](https://discord.com/channels/825469421346226226/875884022285369344/1035023654662197268).
+
+
diff --git a/STL/Nema17AB/A Drive Tensioner Knob v6.stl b/STL/Nema17AB/A Drive Tensioner Knob v6.stl
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diff --git a/STL/Nema17AB/AB Drives Nema 17 v5_AB Drives Nema 17 v5_A Drive Nema_1_A Drive Frame Lower_1_A Drive Frame (1) (1)_A Drive Frame Lower.stl b/STL/Nema17AB/AB Drives Nema 17 v5_AB Drives Nema 17 v5_A Drive Nema_1_A Drive Frame Lower_1_A Drive Frame (1) (1)_A Drive Frame Lower.stl
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Binary files /dev/null and b/STL/Nema17AB/AB Drives Nema 17 v5_AB Drives Nema 17 v5_A Drive Nema_1_A Drive Frame Lower_1_A Drive Frame (1) (1)_A Drive Frame Lower.stl differ
diff --git a/STL/Nema17AB/AB Drives Nema 17 v5_AB Drives Nema 17 v5_A Drive Nema_1_A Drive Frame Upper_1_A_Drive_Frame_Upper_x1 (1)_A Drive Frame Upper.stl b/STL/Nema17AB/AB Drives Nema 17 v5_AB Drives Nema 17 v5_A Drive Nema_1_A Drive Frame Upper_1_A_Drive_Frame_Upper_x1 (1)_A Drive Frame Upper.stl
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Binary files /dev/null and b/STL/Nema17AB/AB Drives Nema 17 v5_AB Drives Nema 17 v5_A Drive Nema_1_A Drive Frame Upper_1_A_Drive_Frame_Upper_x1 (1)_A Drive Frame Upper.stl differ
diff --git a/STL/Nema17AB/AB Drives Nema 17 v5_AB Drives Nema 17 v5_A Drive Nema_1_A Drive Motor Slider_1_A_Drive_Tensioner_1_Body4_A_Drive_Tensioner.stl b/STL/Nema17AB/AB Drives Nema 17 v5_AB Drives Nema 17 v5_A Drive Nema_1_A Drive Motor Slider_1_A_Drive_Tensioner_1_Body4_A_Drive_Tensioner.stl
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Binary files /dev/null and b/STL/Nema17AB/AB Drives Nema 17 v5_AB Drives Nema 17 v5_A Drive Nema_1_A Drive Motor Slider_1_A_Drive_Tensioner_1_Body4_A_Drive_Tensioner.stl differ
diff --git a/STL/Nema17AB/AB Drives Nema 17 v5_AB Drives Nema 17 v5_B Drive Nema_1_A Drive Frame Lower (1)_1_A Drive Frame (1) (1)_A Drive Frame Lower (1).stl b/STL/Nema17AB/AB Drives Nema 17 v5_AB Drives Nema 17 v5_B Drive Nema_1_A Drive Frame Lower (1)_1_A Drive Frame (1) (1)_A Drive Frame Lower (1).stl
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Binary files /dev/null and b/STL/Nema17AB/AB Drives Nema 17 v5_AB Drives Nema 17 v5_B Drive Nema_1_A Drive Frame Lower (1)_1_A Drive Frame (1) (1)_A Drive Frame Lower (1).stl differ
diff --git a/STL/Nema17AB/AB Drives Nema 17 v5_AB Drives Nema 17 v5_B Drive Nema_1_A Drive Frame Upper (1)_1_A_Drive_Frame_Upper_x1 (1)_A Drive Frame Upper (1).stl b/STL/Nema17AB/AB Drives Nema 17 v5_AB Drives Nema 17 v5_B Drive Nema_1_A Drive Frame Upper (1)_1_A_Drive_Frame_Upper_x1 (1)_A Drive Frame Upper (1).stl
new file mode 100644
index 0000000..73ee76e
Binary files /dev/null and b/STL/Nema17AB/AB Drives Nema 17 v5_AB Drives Nema 17 v5_B Drive Nema_1_A Drive Frame Upper (1)_1_A_Drive_Frame_Upper_x1 (1)_A Drive Frame Upper (1).stl differ
diff --git a/STL/Nema17AB/AB Drives Nema 17 v5_AB Drives Nema 17 v5_B Drive Nema_1_A Drive Motor Slider (1)_1_A_Drive_Tensioner (1)_1_Body4_A_Drive_Tensioner (1).stl b/STL/Nema17AB/AB Drives Nema 17 v5_AB Drives Nema 17 v5_B Drive Nema_1_A Drive Motor Slider (1)_1_A_Drive_Tensioner (1)_1_Body4_A_Drive_Tensioner (1).stl
new file mode 100644
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Binary files /dev/null and b/STL/Nema17AB/AB Drives Nema 17 v5_AB Drives Nema 17 v5_B Drive Nema_1_A Drive Motor Slider (1)_1_A_Drive_Tensioner (1)_1_Body4_A_Drive_Tensioner (1).stl differ
diff --git a/img/frontview1.jpg b/img/frontview1.jpg
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