NDK
Cave Dweller
Member since January 2009
Posts: 9,440
|
Post by NDK on Feb 4, 2016 15:10:58 GMT -5
Not a good idea to use that grinder, it is too fast for lapidary use. 1725 is the speed you want. Also bench grinders are not made for wet applications.
|
|
es355lucille
starting to spend too much on rocks
Member since February 2016
Posts: 194
|
Post by es355lucille on Mar 21, 2016 1:40:17 GMT -5
Really nice build ndk!! Lots a great ideas here!
|
|
|
Post by mohs on Mar 21, 2016 9:39:00 GMT -5
I hadn’t seen the finished product or the video till just now, Nate Fine grinder machine at a great cost !! fantastic that the pressed on bearing hold the wheels tight enough grind on ! Ed
|
|
NDK
Cave Dweller
Member since January 2009
Posts: 9,440
|
Post by NDK on Mar 22, 2016 9:42:07 GMT -5
Thanks guys!
Rockinrick, I haven't removed the wheels yet, but all it should take is removing the hoods (just held in place with Velcro), remove the shaft collar & slide the wheels off.
|
|
NDK
Cave Dweller
Member since January 2009
Posts: 9,440
|
Post by NDK on Mar 22, 2016 21:23:09 GMT -5
No problem, ask away. There's no keyway, just set screws on the pulley.
|
|
NDK
Cave Dweller
Member since January 2009
Posts: 9,440
|
Post by NDK on Mar 27, 2016 13:44:46 GMT -5
I've never used any other wheels, these I got from Kingsley North & they work well for me.
Lots of people swear by the nova & galaxy wheels.
I think I've read comments that the cheap chinese wheels are just that - cheap.
|
|
zarguy
fully equipped rock polisher
Cedar City, Utah - rockhound heaven!
Member since December 2005
Posts: 1,791
|
Post by zarguy on Mar 27, 2016 23:17:05 GMT -5
I've had good luck with the hard plated wheels & sintered wheels from China (lapidarytool.com). The soft diamond wheels didn't last too long. I do my own re-diamonding for very little $ & that works well for me. Lynn
|
|
rockinmama601
off to a rocking start
Member since November 2016
Posts: 3
|
Post by rockinmama601 on Nov 28, 2016 9:24:33 GMT -5
NDK, I know the motor has to be 1725 rpm, but how do I choose a motor that is suitable for wet applications? And can you give me more specifics on the shaft? Can I get it from a hardware store? 36" long by 1" round, but what type of metal is best? Thank you in advance for any info. Sorry if these have already been addressed. I read the whole feed, but my head is spinning with excitement at the possibility of building my own machine!!
|
|
|
Post by captbob on Nov 28, 2016 9:54:01 GMT -5
ETA: Welcome to the forum rockinmama601 I don't have time to go back and read why you think you need a motor "suitable for wet applications", but you can just use a regular old motor with 1725 rpm. Here is a picture of NDK's from page 3 of the thread - The motor is a distance from any possible water. These motors are a dime a dozen if you look around for used.
|
|
|
Post by arghvark on Oct 21, 2018 10:46:51 GMT -5
No one has said anything in this thread for a while.
Been digging though DIY threads the last couple weeks and am inspired to build my cabber. Waiting for reasonable used equipment in my area has proved exasperating.
Plan is to build a bench in the garage to hold the future cabber and my old HP combo unit (trim saw and a couple grinding wheels with a disc on the end.)
Ordered a 1"×36" 1045 TGP shaft from Speedy Metals since local shops either don't seem to stock it or are not interested in such a measly sale (had two outfits say "let me check on pricing and get back to you" then never follow up.) From Speedy, a bit under 60 bucks shipped, best price I found. Shocked at what steel prices have done in the last couple years, and especially recently. (No political comments here!)
Have pillow bearings and a couple different motors.
I don't think I'll go the water jug route for shrouds unless plastic sheeting proves too expensive.
Once again, just thrilled by the expertise and willingness to share insights on this forum.
Argh
|
|
zarguy
fully equipped rock polisher
Cedar City, Utah - rockhound heaven!
Member since December 2005
Posts: 1,791
|
Post by zarguy on Oct 21, 2018 20:09:10 GMT -5
arghvark Good to see someone who's building their own machine. We would love to see pictures as it progresses. Check with local sign printers for scraps of Sintra. Lynn
|
|