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B&I mfg

Posted by Manny  
B&I mfg
November 21, 2004 05:43AM
I just recently got what looks to be like a 8 to 10 inch horizontal lap machine
at a yard sale. On one side it has a metal stamp that says Gem Maker by
B&I MFG. of Burlington Wis. The motor is shot but every thing else seems to
move freely. I was woundering if anyone out there might be familiar with this
brand and if the Co. is still around. You now like for spare parts and a manual.
Chris van Laer
Re: B&I mfg
February 07, 2005 03:48PM
This was once a very common machine sold through Sears & Roebuck; I believe it should only be a 6 inch diameter machine. If the motor is shot, you can get a used motor from an appliance repair shop, one from a washing machine for example. You will need a 1750 RPM motor (fairly standard) at a horsepower between 1/4 and 1/3 HP, plus one that operates on standard 120 Volts. This should be easy to get, as they are fairly common. The pulley on the motor should be about 2 to 2-1/2 inches in diameter, but you may want to check John Sinkankas' book on Gem Cutting for rim speeds & pulley diameters. I have one of these old units still, which is invaluable for polishing as the horizontal wheel will hold wet polishing compounds far better than those with vertical wheels. Also, you can unscrew the "nut" on the bottom of the shaft and add grease to the receptacle, in case it has not been done in a while.
Re: B&I mfg
February 12, 2005 05:21AM
Does anyone know what happened to B&I?

What years were they around?

Thank you!
Re: B&I mfg
March 07, 2005 02:38AM
B&I gem makers were around in the late 60's to the early 70's.I have several of these machines in both 6" and 10".I have manuals for both.If you are interested in a copy email me using the above subject title.But I need to know if it is the 6 or 10".Take a measurment from the center of the arbor where the wheels go on to the shortest distance to the outer case. George....
Ken Volin
Re: B&I mfg
June 10, 2005 02:17AM
If you have a manual for a 10" B&I Gem Maker, I would appreciate it. I found one at a garage sale many years ago and have made some use of it but not as much as I would have liked. My kids are now starting to collect rocks and have become interested in it. A manual would be much appreciated.
Ken Volin
Ed Ford
Re: B&I mfg
June 10, 2005 02:50AM
Im interested in a copy to a 6 inch B&I Gemmaker
Re: B&I mfg
June 23, 2005 01:27PM
George, could I also get a copy of the lap machine (6").
I recently began teaching geology at a high school and they have a lap machine in poor condition. I have it up and running, but there are some parts that I can't seem to figure out if they belong to the unit or not. the manual would help alot so that the students can use it to polish up the rocks and mineral that they collect, cut and put on display.

Thank you for your time and help.

Trent Harrison
Earth Science Course Coordinator
Ridgefield High School
200 North Salem Rd
Ridgefield, CT 06877
203-438-3785 x 1306
Eric Rothleutner
Re: B&I mfg
August 22, 2005 12:40AM
I am in great need of a manual for a 10" B&I gem maker.
prompt reply would be greatly appreciated,please e-mail the manual to this address Thank you for your time:Eric Rothleutner
Re: B&I mfg
January 06, 2006 04:11AM
I just bought a 6" B&I gem maker and am also in need of a manual. If someone could send me a copy of the manual, I would greatly appreciate it. Thanks so much!

Larry Quinn
Re: B&I mfg
January 18, 2006 01:45PM
I am Intersted in a copy of the manual for this unit please contact me
Re: B&I mfg
February 08, 2006 07:41AM

Certainly would appreciate a Copy of the Manual for a 10 inch B&I Gem Maker.
Many Thanks,

Re: B&I mfg/Craftsman
February 12, 2006 09:24PM
Hi George,
In your post you say you have several of the machines in 6" and 10" and the manuals. I just bought a Craftsman on Ebay. I think it is a 10". There is a rusty 1/4" thick 10" diameter steel plate on the shaft currently. The shaft does turn freely and without any noticable wobble. The center to closest side measurement is just over 5 1/2". If you have the actual machines are any of them for sale or available for parts? I need the manual also but there are some missing or badly pitted parts that I'd like to replace. Any assistance would be appreciated.
S Grills
Re: B&I mfg/Craftsman
March 26, 2006 03:52AM
I really would appreciate a copy of the manual for the 10" machine. If anyone can get me one, even if it is an electronic copy, I would be grateful and willing to pay a fair price for your services. Also, does anyone know if there was a facet head available for the machine?
Sean Gerson
Re: B&I mfg/
March 27, 2006 03:43AM
I also recently acquired a 6" gem maker from B&I. I've searched all the avenues and this seems like the most likely way to get the manual. I would really appreciate your help if possible.
Rick Pochervina
Re: B&I mfg
March 30, 2006 02:27AM
Would it be possible to obtain the manual for the 6" Gem Maker from you.

Please let me know any fees associated.


Shawna Vedders
Re: B&I mfg
April 08, 2006 06:41PM
I should be getting a 10 inch craftsman inheritided from my Great-Grandpa today when I get a good look at it and know for sure what it is I will want a manual for sure.

Happy to pay any cost associated with printing and mailing.

Thank you
Shawna Vedder
Re: B&I mfg
April 09, 2006 03:46AM
Hello George,

I've got a six inch craftsman gem maker. I don't have your email address to send you my address.

Thank You Shawnie
Re: B&I mfg
April 18, 2006 02:38AM
I'm looking for the manual for the Craftsman B&I 6" Gem Maker too
did you ever get a copy?

If so any help in obtaining one would be appreciated.

Thanks - Paul
Re: B&I mfg
June 19, 2006 02:58AM
I have the 6 inch model. If anyone has the manual I would be happy to pay for a copy by mail or .pdf file. Thanks!
Re: B&I mfg
June 19, 2006 02:59AM
I have the 6 inch model. If anyone has the manual I would be happy to pay for a copy by mail or .pdf file. Thanks!


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