Starting a GIB grinder build

porterb123 said:
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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That is a good idea and I did think of that. But I hate tapping holes, I really hate tapping 1/2" steel holes and I even have a tapping machine. I did not have a 33/64" drill bit anyways for the helicoil :) I remember Jamie answering a question as to why he did not make the holes ready to tap for 1/2" bolts and he said he was concerned about people not tapping the hole 100% straight and might end up with a hole not perfectly aligned for the wheel. This is a problem some might run into if they do not tap it properly.

Slotting the arm is easy and poses not problem at all. But people now know they have a few options on how they want to build it.
 
AVigil said:
That is a good idea and I did think of that. But I hate tapping holes, I really hate tapping 1/2" steel holes and I even have a tapping machine. I did not have a 33/64" drill bit anyways for the helicoil :) I remember Jamie answering a question as to why he did not make the holes ready to tap for 1/2" bolts and he said he was concerned about people not tapping the hole 100% straight and might end up with a hole not perfectly aligned for the wheel. This is a problem some might run into if they do not tap it properly.

Slotting the arm is easy and poses not problem at all. But people now know they have a few options on how they want to build it.
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You are correct re tapping the holes straight. I figured that out the hard way. Wound up welding the hole up and tapping again!! This was offered as an option, not a critique. ;)
 
I had some time and was able to get together a tool rest and pick up a handle for the grinder. Now hopefully I will be getting the motor soon.

toolrest017.jpg


toolrest016.jpg
 
Thanks for taking the time to document! I like how tight everything in your build is. Some on YouTube have huge spacers between the wheels and arms and they seem to make a huge amount of noise compared to my KMG. I would think large spacers would lend to tracking issues and more noise?

My wife just bought me a GIB for our 20th. I will be one step closer to 3 grinders!!! :D

David Sharp
Sharpwerks
 
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Nice grinder , what speeds do you guys grind at?VFD people especially . Take every word stacy says and listen to it, it could have saved a $100 compact florescent today.
 
If you are going to get the double "sided" carpet tape make sure you get the kind that DOES NOT HAVE a fabric in it. There are some that are a piece of all sticky. That's what you want !!! Frank
 
Thanks Frank for the heads up.

I am still going back and forth on using a piece of harden tool steel or glass.
 
I thought I would put up what I ended up with washer and spacing wise to get the wheels lined up and tracking straight.

All of my wheels are from Beaumont and probably the spacing may differ from other wheels.

My 4" drive wheel is 1/2" from the face of the stand up

Idler 4" idler wheel is spaced with five 7/16" washers and one 1/2" nut.

The 2" wheel and 4" wheel are space with one 1/2" split lock washers

Two 7/16" washers equal the width of one 1/2" split lock washer.

This might help give someone a starting point on their grinder.
 
Wow, that paint looks sharp! Makes me want to do my KMG up the same way. Well done...thanks for posting
 
I put in an order for 1.5 hp motor and wire kit from Wayne Coe yesterday. I am waiting to hear back from him. Can't wait to get it up and running.

I will post some picts when it comes.
 
I received my motor the other day. The box looked like it had been rolled down a hill and hardly held it shape. I opened it and found the motor intact but with a dent in the shroud and a couple dings in the body. I wired it up and it worked fine so I am good to go. I have recieved steak packed with more styrofoam then the company used. The motor just blew through the styrofoam. They are lucky it was only a couple of dings. Anyways the motor runs smooth as glass and is pretty quiet so I am happy.

I finished cobbling the grinder together and made some changes. I had a wobble in the belt and had to do some tinkering with getting the drive wheel aligned to help diminish it. I had the belt tracking perfect with slack belt position but when rotated into platen position about an 1/8" of the lower wheel would show on the inside. So I went over and did a variety of tweeks and no matter how many things I might try the belt still would not cover that lower wheel completely while the belt was aligned with the upper wheel. After going over it with levels measuring angles and alignment. I decided to through a washer on the lower wheel then the alignment was perfect but of course when moved to slack belt postion there was a gap on the other wheel...lol

I went and got a 123 block place it on the tool arm and against the "Multiplaten" and the platen was not square. The "Multiplaten" was not flat. And of course the further from the axis of rotation the more it is out of square. So I need to take and either get the platen surfaced ground or maybe on a slow day I will put the mutiplaten on the linisher and then lap it to get it flat. For now I can live with a washer.

Next I am going to heat treat my 01 platen this afternoon.

Here are some picts of the build
GIBcomplete004.jpg


GIBcomplete003.jpg


GIBcomplete002.jpg


GIBbuild006-1.jpg
 
AVigil said:
The "Multiplaten" was not flat.
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How much is it off? I don't expect it to be perfect (it is cut from a 5'x10' sheet) but I've never heard of anybody having a problem with it being warped like that. I just checked the ones I have here, and none are too bad.

Otherwise, that is a really nice build. Thanks for sharing it. To my knowledge, you are the second person to use pulleys with it. Would it be ok if I saved the pictures and added them to my website gallery?

Jamie
 
polarbearforge said:
How much is it off? I don't expect it to be perfect (it is cut from a 5'x10' sheet) but I've never heard of anybody having a problem with it being warped like that. I just checked the ones I have here, and none are too bad.

Otherwise, that is a really nice build. Thanks for sharing it. To my knowledge, you are the second person to use pulleys with it. Would it be ok if I saved the pictures and added them to my website gallery?

Jamie
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Jamie,

I just had to bring down a bit on the side that attaches to the tool arm. I check the wheels alignment with 123 block and that side was perfectly square. I marked the side to the tool arm with a sharpie and laid on on a 3/4" of glass that is perfectly flat. I use a 6 foot piece to roll my split cane bamboo blanks on when glueing up to get them dead straight.

It really is not a big deal. But when you build it like I did everything has to be perfect or every little bit off adds up and of course is magnified the further away you get and in this case it is the wheel.

I had to track down a little 1/16" side to side movement when running the grinder. So everything got checked. I had to track down .006" movement in the drive wheel. So I had to do a little shim and tighten while using the dial indicator eliminate it. Since most people just mount the motor to the grinder then everything else will line up easier since everything bolted to the stand up.

I am really happy with the GIB and highly recommend it. If you have the $$$ get the motor and VFD from Wayne Coe and you will be good to go. If you want to avoid the VFD or save $$$ and set it up like I did then I suggest you know how to run a dial indicator and mount to make sure the drive wheel is perfectly align.

It has been a pleasure ordering from Polar Bear Forge and Wayne Coe. I strongly believe in supporting the people in a hobby and keeping the $$$ within the hobby so it can survive and grow and it is worthwhile for people like Jamie and Wayne to provide the service they do. I also recommend the wire kit from Wayne. It make hooking up the on/off switch so easy and was a big relief because I am a dunce when it comes to electronics.

I hope this thread gives someone some ideas and gets them motivated in ordering a GIB and Motor from Wayne Coe. Just a mention....It is really quiet compared to others I have heard and I am really pleased about that :)

BTW Jamie feel free to use the pictures as you wish.
 
Thanks! A number of times!

It's true that this method takes a little more precision. When I first started building my own grinders, I always encountered that.

Jamie
 
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