Thread: Electric die grinder preferences

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I would buy one of these http://www.mytoolstore.com/makita/mak08-08.html

Originally Posted by tango

I would buy one of these http://www.mytoolstore.com/makita/mak08-08.html

that the same one i have had it for 20 years burnt the front bearings out of it and the tin nose cone fell off put new bearings it still running spins to fast for alum yor will have a hard time keeping the carbide from loading up

Originally Posted by pat mccarthy

it still running spins to fast for alum yor will have a hard time keeping the carbide from loading up

Spray WD-40 on the bur and it won't load up. High speed or carbide.

I have been using 1/8", 1/4" (with & with out a flex shaft, & 90 dgree grinders every week on alumumn & steel/iron since early 70's I have top of the line name brands, and I have grinders that I paid $14.00 for, the old Dremel worked & last the best.
The only 1/4" one that I burned out was a Chicago electric, 3-5 mins after I started use it! still use the replacement one on lite stuff.

I have changed many brush's in all brands I've owned. Harder to get name brand brush's, alot of cheaper ones come with spare brush's. I work them hard most of the time when I use them.

Pat

Originally Posted by HemiTCoupe

Spray WD-40 on the bur and it won't load up. High speed or carbide.

I have been using 1/8", 1/4" (with & with out a flex shaft, & 90 dgree grinders every week on alumumn & steel/iron since early 70's I have top of the line name brands, and I have grinders that I paid $14.00 for, the old Dremel worked & last the best.
The only 1/4" one that I burned out was a Chicago electric, 3-5 mins after I started use it! still use the replacement one on lite stuff.

I have changed many brush's in all brands I've owned. Harder to get name brand brush's, alot of cheaper ones come with spare brush's. I work them hard most of the time when I use them.

Pat

i use petroleum jelly with a acid brush but the thing is just to fast for my likeing needs a speed control and in time like you said you could burn the brush out of it fast . the way it is with out a speed control you will plug a alum carbide wd 40 is ok the mill /tapping cutting oil work s better but any thing spinning that fast you just burning any thing you put on the carbide i done a wee bit of this stuff to over the years but a could be wrong

Originally Posted by tango

I would buy one of these http://www.mytoolstore.com/makita/mak08-08.html

I like the 3.5 amp paddle.

I have a friend who is a wood carver and he has bought those chinese Makita knockoffs and got by with them but I noticed they vibrated a bit more than Makita.
I am thinking I could use my Foredom foot control.

Block looks nice, I know what it takes to get to that point, alot sitting with a grinder in hand. I like to put on head phones and get it to it all day, for days. I build Aluminum investment molds & plastic injection molds long before we had CNC's. lots of grinding.
I ground smooth all the welds on our '27 T frame with IRS, IFS.

I understand what you mean by to many rpm's. I like to use the foot controller on the 1/4" grinders(I'm usually sitting), and I like the controler on the grinder on the 1/8' ones(I'm all over the place, free to move).

Pat

Originally Posted by HemiTCoupe

Block looks nice, I know what it takes to get to that point, alot sitting with a grinder in hand. I like to put on head phones and get it to it all day, for days. I build Aluminum investment molds & plastic injection molds long before we had CNC's. lots of grinding.
I ground smooth all the welds on our '27 T frame with IRS, IFS.

I understand what you mean by to many rpm's. I like to use the foot controller on the 1/4" grinders(I'm usually sitting), and I like the controler on the grinder on the 1/8' ones(I'm all over the place, free to move).

Pat

Thanks i have done many like this. i can do one fast now:dSMILE: .i do as well as head chambers port work on heads for harley s bike and intakes as well as auto heads and intakes . i did rims to for GM show cars i like to work with grinders and sanders to blend and form metals i fix busted blocks and blown up heads. i am doing some stuff at the shop right now. i may put some of it up on the form to show some guys how i fix busted stuff . the crank case timming cavity looks the same on that block to . over the years i have found for me anyways i like drum sanders and use more stones and MX or Cratex then carbide but i do use them i like to run them about the same speed as a drum sanders or a hair faster just to get a good cut thats all. the carbide for me if they start to plug up at hi speed start s to jump i worry about catching one in the face or blowing up one .i had one that was 6 inch long in a intake was a cheaply made bur it bent the 1/4 shaft on the mount and started to whip .with stones i can run them so much fast and if plug up they do not jump and i can cut them to size or unload them by using my bench grinder for frames and other big stuff on i have some of the see thru sanders they have holes in them so you can watch the cut i run on the small 4 1/2 angle grinders and move up to a 8 inch soft pad i use on a big variable speed sander with 80 grit zirconia abrasive then move up to a da sander

I've got an old Craftsman 1/4 inch electric die grinder, and I loan it to people I don't like. The thing spins at like 20,000 rpms and I must have bent something at one time because it vibrates like mad. It has caught and jumped out of my hand many times but the thing does remove some metal. As mentioned, a speed control would be great........mine only has two speeds.....off and OH S*** !!! I only use it as a last resort.


Don