Grinder in a box! DIY grinder kit

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Had some time the other day to work on putting this together, and a little more tonight. Need a couple bolts, a spring, assemble my flat platen (that will go between 2" wheels) and then wire this puppy up! I'm quite excited!

By the way, Jamie, I sent you an email, I need another rotating platen (as in a second one, not a replacement)...

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blindhogg said:
vfd's (IF you purchase the right one) turn single phase 220v into 3 phase 220v.
Therfore vfd"S are only needed if you purchase a three phase motor. If you do go three phase motor and vfd you get the great benefit of variable speed.
Or go single phase motor 110v or 220v and you get a single speed motor.
Chris
Click to expand...

Chris and all:
I am trying to get my head around single phase -v- 3 phase. Call me an idiot but can I actually use a 3 phase motor if I don't have 3 phase power to my shop? I am reading about the VFD and it seems that you all are saying that a three phase, with the VFD will allow for it to be run in a traditional home shop that isn't equipped with 3 phase power. Are you able to clarify this once again because I have a really good line on two new 3 phase motors that I might have to pick up if it will work in my home shop. Thanks in advance
Dirk
 
Nobody us going to have 3-phase ran to your house, you'll have single phase. A VFD will convert your single phase to 3-phase and allow for variable speed and consistent power...

S noo, you don't need 3-phase, that is what a VFD is for. Just make sure if you're going to use a VFD that you get a 3-phase motor, otherwise a single phase motor is fine.
 
amcardon, nice build! I'm pretty sure there are mail delivery people all over the world that have some "interesting" things to say about me. :D

dadarrow, I wish I could have 3 phase in my home shop, but it's a tad expensive for me. The single phase that's in there can run a single phase motor. The single phase that's in there can also run a 3 phase motor when controlled by a vfd. Wayne Coe is selling both at a good price. He can be found at http://www.waynecoeartistblacksmith.com/Motors___VFDs.html.

Jamie
 
Wayne Coe is fast too, I just ordered my VFD yesterday and it should be at its destination by the weekend:thumbup: That means I should have my GIB up and running next week
 
Got the kit ! :D

Now which one of you fine sirs can tell me where to get(and what specific) cables? I need the cable to the VFD and a power cable for 220. Is it best to solder and shrink wrap the connections out of the motor?

Thanks for all of the info, this thread is a great help!

Also what weight spring are you guys using? I know there are several variables and the tooling arm can be adjusted to change tension, correct?
 
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Hi folks-

Newbie here and first post to boot.
I've read through the original thread, and this one - I can't seem to get my head around how the standard platen goes together from the nested .dxf patterns that are found on blindhogg's site. Has someone got a picture of the assembly they can pop up here to set me straight ?

And second question - has anyone ever got a plasma cut version of the parts and how did it turn out? I have an acquaintance that just installed a high definition plasma table and I think I can call in a favor to get him to cut the parts for me for free :D I think the machine is accurate to about .015" but the small holes may be a problem - I might have to cut them myself. Maybe the machine can do a simple piercing for a starter pilot hole for me.

Thanks for the great resource and all the useful info in here !

Lewis
 
The plans on my site Blindhogg.com does not include a platten. I never got around to creating one of them. But Jamie at polarbearforge.com does sell just his platten alone if you like to get it. I do believe a plasma would work, you might have to dress the edges with a sander or grinder, but should work out for you. Give it a go.
CW
 
LHC, greetings and welcome!

As Chris said, I do sell the platens supports separately. They are $20 apiece plub $10.50 shipping.

Depending on how the pierce looks, using it as a pilot is a good idea. I've done that from time to time on different projects. If the pierce isn't the nicest, you can also cut the profile and then just spot and drill the holes.

Jamie
 
Chris / Jamie -

Thanks for the reply so quickly.
I did come across a platen of sorts on your site Chris -
it's in the one piece .zip labelled "platen.dxf" as well as in the tapping diagram .jpg. Maybe it's a remnant of the past evolutionary process ?

Thanks again.
Lewis

PS - It's in the cad files provided by Atlasknife
 
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blindhogg said:
Thought I would show off my recently finished GIB kit. Finally got it all together and did alittle grinding with it today. Real happy with it and the second tooling arm slot sure comes in handy with a separate toolrest.
Chris
Click to expand...

That grinder very nice. I really like the Tool Rest on that grinder. Better than my KMG! Might have to try something??
 
I am in the process of ordering the grinder in a box.
Trying to get a list of supplies needed. Anyone know the length of the tooling arm. How about the lenght of the KMG tooling arm, just need to know how much 1.5x1.5" solid steel to get. Planning to make 2 of the arms.

Edit: will be using standard platten on one arm and a 8" wheel on the other. Both with 72" belts.
 
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Another question.
Has anyone found the ideal spring to use. TSC sells Century brand springs. It would be great to have a part number. I have never used a KMG style grinder and don't know what the right spring pressure fells like.
If no one has a part number, would someone mind measuring the collapsed length and wire diameter of a known good spring.
thanks

Alan
 
I have had my GIB and wheels for almost a year. One thing after another has kept me from finally getting it together. But seeing as how I have set my old belt sander that I use for a grinder on fire a dozen times lately, I am finally pulling the trigger and getting it together. I should be picking up my motor tomorrow. It's just a single phase 110 2hp single speed 3450rpm motor. Eventually, when time and money allow, I'll replace it with a variable speed motor. I'm going to mount the grinder on my Rockwell JawHorse. It's stable as hell and at the height I like to work leaning against my stool.

Jamie has put together a solid grinder and I'm really excited to get mine running.

Keith
 
alanjeep said:
I am in the process of ordering the grinder in a box.
Trying to get a list of supplies needed. Anyone know the length of the tooling arm. How about the lenght of the KMG tooling arm, just need to know how much 1.5x1.5" solid steel to get. Planning to make 2 of the arms.

Edit: will be using standard platten on one arm and a 8" wheel on the other. Both with 72" belts.
Click to expand...

From what I have experienced with the various rotations of the multi platen and how much belt tension is needed I got a tooling arm 18" and a work rest piece that is 22"

I got a piece of thick walled tubing first and it ended up being bent, now I have 1.5x1.5" solid and it is much better
 
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