Home Built Surface Grinder

Ladams19 said:
OK finally got it done and it works great. Its vertical and I am going to figure out to change that next. Need more information on the bracket to tilt it or how others have done it. Sent One Arm a note on that one. I would like to thank all the people who helped me through this. Without you all this would not have happened. Thanks to One Arm for the inspiration, Kevin McGovern and Ken H for many tips and tricks to get this together and last Stromberg Knives. Without Stromberg sending more in depth information I would still be trying to lay this out. You guys all rock, thank you much. I know she not as pretty as most, but here she is. Pardon my messy shop/storage area. I am slowly working on making it more of a shop and less of a storage area.
Click to expand...


WOW! I’m not here for a couple weeks, and this has gone to 15 pages. Uhhh, I’m gonna say this this was a good idea?? LOL!

Seriously, thank you so much guys..for all of you that followed me in making one of these. I’ve really enjoyed seeing the different aspects we all take with various tidbits. “Different but same!” To quote the very wise Mr. Miage!

Ladams19, I just came upon your build today. Yours touched me the most brother. Not sure if you know, but my handle, “One Armed”, isn’t just a name. It’s how I live every day of my life! Like you, I was in a very serious accident in 2014, which very nearly claimed my life. My injuries were extensive, and I spent 2 months in the hospital. Besides the Brachial Plexus Injury, which paralyzed my left arm/hand, I also suffered brain damage. So I understand EVERYTHING you have said. How no one else can really understand the difficulties one faces in this situation. But remember to never give in to defeat(which you haven’t!) And if you have not, I encourage you put your faith in The Lord. I found in time that although I lost, I was also blessed. I have gifts I would not, had this not happened to me.
 
There is no real spec as for "lb strength" of magnets. What you look for is the N52 which is the rating of magnets. I've got the weaker N48 which do ok. I'm looking at making another set with N52 magnets.

As far as length of tooling arm, that depends on your setup. I'd mount the surface grinding part first, then determine where the wheel should be to work.
 
Ken H> said:
There is no real spec as for "lb strength" of magnets. What you look for is the N52 which is the rating of magnets. I've got the weaker N48 which do ok. I'm looking at making another set with N52 magnets.

As far as length of tooling arm, that depends on your setup. I'd mount the surface grinding part first, then determine where the wheel should be to work.
Click to expand...
Well when I check here for example, I can get a 3 x 1/2 and either get it in 1/4 or 1/8" thicknesses. 1/8" thick has 14 lbs of pull, 1/4" has 35 lbs of pull, so I don't want to get the wrong one and have not enough strength or super strength to where I can't get the part off lol. The difference between the N48 and N52 in the same thicknesses is only 3 lbs of pulling force (35 vs 38) so it's negligible. I am considering getting the N48 ones that already have countersunk through holes then I can simply drill/tap and skip the epoxy step.
 
razor-edge-knives said:
Well when I check here for example, I can get a 3 x 1/2 and either get it in 1/4 or 1/8" thicknesses. 1/8" thick has 14 lbs of pull, 1/4" has 35 lbs of pull, so I don't want to get the wrong one and have not enough strength or super strength to where I can't get the part off lol. The difference between the N48 and N52 in the same thicknesses is only 3 lbs of pulling force (35 vs 38) so it's negligible. I am considering getting the N48 ones that already have countersunk through holes then I can simply drill/tap and skip the epoxy step.
Click to expand...


Those should work well. The 35lb, not the 14lb. I used the type with the countersink holes for another of my build....the sharper I built. And they work very well! My only contention with these, is you will be facing quite a bit of drilling & tapping. And you will also need small machine screws, likely 10-24.
 
Last edited:
Last edited:
he guys, it took me a while but I started my build also. Here are the first pictures....

36627629_1468968166541620_3225052249206030336_o.jpg

Milling the chuck at my buddies place, Gudy van Poppel

36646920_1468963986542038_4760829028363927552_o.jpg


36640265_1468964456541991_5415723180641746944_o.jpg

I used some old parts that I had laying around. I was not happy with the table that I ordered in china, to much play.

36701125_1468963869875383_7169835343846309888_o.jpg

Shortened with 1 inch of travel.

36739610_1468963729875397_6487802474341072896_o.jpg


36650905_1468963276542109_1447147676578611200_o.jpg

Tooling arm prepped

36683007_1468963169875453_3934416688560209920_o.jpg


36652572_1468963069875463_4334528639195414528_o.jpg


36640194_1468962909875479_4423873111527522304_o.jpg


36650053_1468962759875494_3026752088731287552_o.jpg

first test fit (grinder is a Claryx)
 
decided to make the assemble in such a way that I can also grind the bevels. So I had to rearrange some parts. It is not done yet, but getting close. Did a test run yesterday and had good results. Only 2 hundreds of a mm of difference measured from tip to the end of the tang. That’s more than accurate for me.

36901591_1475608742544229_5910131748145987584_o.jpg


37030173_1475609235877513_7823750741796847616_o.jpg


36899254_1475621585876278_2230361815139745792_o.jpg


36903184_1475608845877552_8481945877089353728_o.jpg

By loosening the lever on the bottom and tightening the screw on the tooling arm, I’m able to angle the chuck.

36851061_1475608962544207_8755491768645976064_o.jpg


36869688_1475608169210953_2214954268505407488_o.jpg

Quick test grinding bevels

Same principle but now with the small wheel attachment

36903030_1475608262544277_8935851245134938112_o.jpg


36912971_1475608382544265_3726111199905972224_o.jpg


36904492_1475608635877573_6295315165554409472_o.jpg


This weekend it will be cerakote time.
 
Last edited:
Awesome Toni Oostendorp Toni Oostendorp ! Where did you get the sliding table? I don't like the aluminum one from China either. I need something with less play. I was also trying to come up with a way to do bevels. Looks like it works pretty good!
 
hbm-l-3437.jpg-1920x1080-5772237c8d.jpg


I had one of these in the workshop. Never used it, took it apart and only used the bottom part with the table. I then shortened it, it now has a travel of 1 inch. The good thing is that it is adjustable and you can eliminate almost all play. (but still a chinese table hahaha)
 
Last edited:
Very nice Tony! I like the tilting ability... I can see that being VERY nice for long swords haha. what is the roll pin thing you used in the tilting of the arm?
 
Toni Oostendorp said:
I had one of these in the workshop. Never used it, took it apart and only used the bottom part with the table. I then shortened it, it now has a travel of 1 inch. The good thing is that it is adjustable and you can eliminate almost all play. (but still a chinese table hahaha)
Click to expand...

Cool, thanks! That sounds like it would be much better!
 
For those interested, I'm learning Fusion 360 and made a CAD file for the magnetic chuck to work with these magnets (35lbs of pulling force, 13 magnets required). I'm making my build to work with Ti philips flat head screws from Amazon (so they won't be magnetic and difficult to get in). The only thing I didn't do was add the through holes on the side, because depending on the wheel width and your build the screw holes could be different places.

I'm hoping I can just drop this file off and the aluminum slab at a CNC machine shop and have them cut it out for me =)

To navigate the below link for those not familiar, hold your center mouse wheel down to move the chuck around, then zoom in with the mouse wheel, and if you want to have a 360 view hold down shift while you press the center button down and move the mouse around.

https://a360.co/2m7nu7I

i-v2mWQGM.jpg
 
What if instead of grinding groove on CNC for magnet you make plate with ALL magnets .............one to one ?
 
Natlek said:
What if instead of grinding groove on CNC for magnet you make plate with ALL magnets .............one to one ?
Click to expand...
So you are saying it would be one big magnet basically? A bunch of them side by side?
 
You must log in or register to reply here.
Back
Top