Grinding Problem

[TheCivilman]

I hope someone can help me out. I have tried flat grinding a couple of knives and the first knife came out okay but I have an issue with my second and I am hoping someone may be able to shed some light. (I have attached a sketch to help illustrate.)[ My grind line on my weak side follows the profile of the blade edge with a nice arc but the strong side has come out in more of a straight line. :grumpy: Do you know what causes this? or how I can prevent it?
I use a flat bar type rest to start my grinds, both hollow and flat, and once I have the grind started I go free hand. I do not rotate to follow the profile. I pull the blade across the face of the contact wheel in a straight line from left to right and only pull the handle away from the wheel as I approach the tip. I believe my mechanics are the same but obviously something is different from one side to the other. Help. Please.

Thank you, Kevin

 

[Karl B. Andersen]

It's just practice, friend.
You have a dominant hand - either left or right.
You just simply are not making the EXACT same movement when you switch sides.
It can be the slightest of movements.
You might lean a little one one side when you grind it.
A shoulder movement - an elbow out farther than the other one.
that's all it amounts to.
It can take many, many hundreds of hours sitting in front of your knife grinder before you can do both sides the same.
Don't get in a hurry.
Slow down.
Think about what you are doing on each side. Try to duplicate it on the other.
It takes time.
Time takes time.

 

[AcridSaint]

Looks to me like you're starting at a different angle on each side. One side you're starting close to 45* making your straight line where the other side is closer to perpendicular and then you sweep the blade to make the grind. I've done this many times, especially on shorter blades with a sweep like that one.