Starting a GIB grinder build

You are very talented. nice work. I will have to show my wife the pics of your garage. It looks like mine.
 
Loosearrow said:
You are very talented. nice work. I will have to show my wife the pics of your garage. It looks like mine.
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I do need to put up a shed and get all "Non Shop" junk out of there...lol On top of that work table is a little and old surface grinder I turned into a mill for making bamboo flyrods, I am going to turn it back into a surface grinder. Here is a pict of what is behind that stack of stuff :)

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One of the draw backs of the multi platen is the holes for the wheels are pre drilled for 1/2" bolt. Tapping for a 1/2" bolt is not an option. So a problem you can run into is while using the multiplaten your bolt heads will hit the tool arm. You could add spacers to all the wheels all the way around to make for clearance or you can just do what I do and cut out a space in the tool arm.

This allows the platen to spin 360* so you can move the platen to use the 2" or 4" wheel as well as the platen or for slack grinding. I hope this build is giving some future GIB makers some ideas.

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Doesn't that significantly reduce the strength in the arm, and introduce some play? If it does, I would think that it would affect the tracking on the grinder.
 
tedinatl said:
Doesn't that significantly reduce the strength in the arm, and introduce some play? If it does, I would think that it would affect the tracking on the grinder.
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No not at all. The arm is steel and far stronger then the small amount of stress applied to it.
 
AVigil said:
One of the draw backs of the multi platen is the holes for the wheels are pre drilled for 1/2" bolt. Tapping for a 1/2" bolt is not an option. So a problem you can run into is while using the multiplaten your bolt heads will hit the tool arm. You could add spacers to all the wheels all the way around to make for clearance or you can just do what I do and cut out a space in the tool arm.

This allows the platen to spin 360* so you can move the platen to use the 2" or 4" wheel as well as the platen or for slack grinding. I hope this build is giving some future GIB makers some ideas.
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You are my new best friend! I was trying to figure that one out for a while. Duh! so flippin simple. Awesome!
 
My solution was just to space everything over enough that the heads of the bolts cleared the frame. I have limited space so I have to keep the tooling arm short:o luckily the drive wheels set screw is fully on the motor shaft.
 
Nice lookin' build, Brother! Thanks for posting pics, it's always nice to see the progression!
 
I started on the platen by taking a piece of 2"x2" angle and cutting it to the size I wanted. I cut a slot just big enough to hold the mulit platen support bolt so when I loosen the multi platen bolt it will keep the bolt from turning so only one wrench needs to be used. I bolted the platen on the multi platen with some 5/16 flat head bolts. I hate tapping 1/2" steel so I counter sunk the holes for the bolts to clear the tool arm, added washers to match the spacing of the wheels so it lined up with the wheels, I then locked it down with some lock washers and nuts.

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That's really starting to come together nicely! Are you going to put some type of liner on the platen? Also, did you slot the two holes that attache the platen to the upright? It's not very clear on the picture. I would think that it would be nice to be able to adjust how far the platen sticks out in front of the tangent between the two wheels.
 
tedinatl said:
That's really starting to come together nicely! Are you going to put some type of liner on the platen? Also, did you slot the two holes that attache the platen to the upright? It's not very clear on the picture. I would think that it would be nice to be able to adjust how far the platen sticks out in front of the tangent between the two wheels.
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I will be sloting the bolt holes. I will be getting the glass platen from USA knifemaker and when it comes I will put a ledge on the platen as well.

I saw a maker use a double stick exterior carpet tape to adhere the glass platen and it held it well over a lot of grinding. I might have to look into that.
 
what size OD is the variable speed pulley??

I ask because I was too cheap to buy online and found a couple 4's local, yeah I saved some money as each was maybe $14 problem keeping them the same is one was 3/4" ID and the other 5/8"....

Nice grinder !!!
 
I bought my pulley's from Beumont and they are Maska's at $42 ea they are some of the best. I have 234 so the big one is 4".

Droppng $82 on pulleys is something I just closed my eyes and pushed order.....lol I just want to make sure when it is hauling ass as many variables are eliminated to keep vibration to a minimum.

Thanks for the compliment guys. I enjoy building stuff like this as much as using them. I just hope this thread helps some others answer questions they might have and make their build easier.
 
Ok, one more question - how long is the 1 1/2" square tubing for the platen holder and tool rest? I don't know how much to get. I'll be running 72" belts, BTW.
 
tedinatl said:
Ok, one more question - how long is the 1 1/2" square tubing for the platen holder and tool rest? I don't know how much to get. I'll be running 72" belts, BTW.
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24"

Get one for platen arm and one for the tool rest. The platen arm can be left at 24" and you can cut down the tool rest arm when you decide on how you want that built.

Get 1/4" thick wall. I am going to replace mine with thicker tubing as well

http://www.onlinemetals.com/merchant.cfm?pid=10329&step=4&showunits=inches&id=845&top_cat=0
 
Thanks for the link. I just ordered some square tubing and 2" angle from them - good prices, BTW.
 
Ted,

Your welcome. Luckily I have a local metal yard to get my supplies. Online Metals has a good reputation and I know a lot of people who use them.
 
Wloch248 said:
You are my new best friend! I was trying to figure that one out for a while. Duh! so flippin simple. Awesome!
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Or you could tap and install a HeliCoil instert for the 1/2 inch bolt and not worry about slotting the tooling arm or adding spacers. I did this on my GIB
 
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