Grinder Project

Kevin McGovern

Kevin McGovern

Joined
Jul 31, 2015
Messages
3,118
I am working on building a grinder based on the EERF grinder plans that are out there. I am working with my CAD guy to correct the issue with the top and bottom tool arm pockets being out of alignment. Some other tweaks in the works, like having built in accommodation for a gas strut as opposed to the spring set up. We are working it up in solid works to tinker with. The end product will be a water jet ready DXF file that can be cut from two .5" thick 12" x 24" plates. I'll try to do some updating as this progresses. And no, it won't be titanium. Sorry folks...
 
First, thanks for posting this.

I just had a friend load these dxf files at work, hoping to have 2 cut next week on a CO2 laser. I've opted for the bolt together version since the burnt holes can be kind of ornery to tap. I'm assuming that you started with the nested version with the smaller hole dimensions for tapping.

I was unaware of the alignment issue in the tool arm pockets. Which piece is in need of correcting?


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tkroenlein said:
First, thanks for posting this.

I just had a friend load these dxf files at work, hoping to have 2 cut next week on a CO2 laser. I've opted for the bolt together version since the burnt holes can be kind of ornery to tap. I'm assuming that you started with the nested version with the smaller hole dimensions for tapping.

I was unaware of the alignment issue in the tool arm pockets. Which piece is in need of correcting?


Sent from my iPhone using Tapatalk
Click to expand...
I am making the main upright plate incorporate the top pocket side plate, instead of it being a separate piece. This will mean both tool arms will be in direct alignment instead of the top arm being offset to the right by .5"
 
I'm also lengthening the main tension arm upright to make the tension arm more horizontal. This should allow me to improve tracking. Also setting it up to use a gas strut instead of a spring.
 
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