Tool Post Grinder Take 2 - Part 1

[@mkegadgets4380]

I really dig the music when you’re machining. Very relaxing in the morning. Looking forward to next part.

[@wallbawden5511]

Lee you do great work and when one admits a mistake or a failure and does so on camera well what can one say great man right there even shows what went wrong so we don't make the same and you moved on to fined a fix Big Cheers to you

[@warrenjones744]

Lee I think what you are doing will probably be fine for your intended use and give you some decent life and results. For tool post grinding I think the problem in general with using inexpensive or hand held die grinders for the long term, whether they are electric or air is the spindle bearings will not be up to the task and overall balance of everything would not be optimal. Nevertheless I have a friend, who in a pinch, mounted a 6 Inch bench grinder to his lathe one weekend to repair a transmission shaft he desperately needed. It worked and the tractor is still going strong. It seem to recall others have done what you are doing and it seems to work. So why not? Hell if anything we will all learn a thing or two that might be useful. Cheers

[@honeycuttracing]

If you have room, may want to put a lock nut on each your thumb screws that holds the grinder, know our little Makita bottle diegrinder does some serious vibrations, just a thought and hope it helps!

[@JimG31547]

Good Evening Lee, Just a not to say I really liked the view from the back side of the Lathe. Good job and will see you next week.

[@basiedp]

Lee, thanks for sharing. If i can give my bit info. I made same config, but made it a clamp system not a stud puching into machine. You could cut slot were made hole with thread and put same bolt on side to close slot a bit to fasten machine. Just my little input, hope you dont mind. Thankyou, have a nice day.😁

[@terrycannon570]

Thanks Lee. 4 jaw boring is much faster and easier to measure as you go. Thanks for making the video and bringing us along.

[@1crazypj]

I've got 3 HF die grinders, had them for over 20 years. Still working great, probably better than the Blue Point I bought from Snap-On. I run at 90PSI but you need quite high CFM air delivery. I almost always use them with carbide burrs though so they don't put as much torque on the motor. 60 gallon compressor is actually pretty meaningless, you need the SCFM (Standard Cubic Feet [per] Minute) and the compressor on top of tank looks a bit small. Saying that, I bought a HF electric die grinder before HF had different quality ones as I no longer had access to big compressors in work, running two smaller compressors into a tank works but is noisy and set up isn't exactly great. You can also use a router speed controller if you need to slow things down (or make a box and use a light dimmer switch)

[@tomsmith3045]

This looks good! Sometimes a re-start is just what you need. I think this will work fine. One thought...if the nose of that grinder is a cast alloy, zinc or something, consider grinding a tiny round spot where those 1/4-20 bolts will hit, and then put a round nose on those bolts. I say that because it might work fine, but with it being tapered it might try to back out on you as you grind. With a little bit more purchase on the nose, it might hold better. And that's all just arm chairing from here, it might hold just fine as is. Good luck!

[@bhein67]

I think you have made a great choice for a grinder and I like your new design. I do have one question, will the thumb screws from the side damage the housing of the grinder over time? Would it be better to slit the front and use a through bolt to clamp them in? Cheers from Canada

[@BenButler1]

Hey Lee! Thanks for the video. Here's an idea, easy way holder. model Hercules handle then design a mount that slips over handle. Dovetail and all. Would probably need a reinforced filament.

[@dennythomas8887]

Nice project Lee.Can't wait to see how well it works. I made something similar except it was for my Foredom tool. It's like a Dremel tool but it has a hanging motor and a flex shaft. I made a holder for the end of the flex shaft. It works fine but it's strictly for light duty work. I think yours will be much more heavy duty.

[@baconbuttybash]

Hi mate i think you should make the dovetail a bit taller as if its to thin you will get it trying to clime with such a thin dovetail and when get hot that's wen you will need that extra Hight. Enjoying it so fare Lee stay safe and don't forget your safety gear.

[@Stefan_Boerjesson]

Thanks for the tip how to hold the grinder. The Dremel is much more bulky but the principal of Yor design might work.

[@incubatork]

I would have done the smaller hole first just in case I overshot and made it too slack then I could use it for the bigger hole. I made my holder for a dremel(genuine) with the same thread that it has on the nose end, I don't think its sturdy enough for anything heavy and have only drilled a few cross holes with it before I got my mill. I have a similar 500w straight electric grinder that I might copy your idea for and maybe true up dome vice jaws and a part finished ER collet holder(because of the poor finish I ended up with.

[@TheAyrCaveShop]

Hi Mr. Lee, just for the reduced noise alone is worth going electric. See you on the next one.. ATB.....

[@Roy_Tellason]

Instead of those thumb screws done the way you did it here, I'd have slit those clamping blocks at the mid-point and put clamping screws there. That way you're gripping the nose of the tool but not particularly stressing it?

[@danharold3087]

I have the single speed Makita version of the grinder. Looking forwards to see how yours works out.

[@howder1951]

Great choice on the grinder, the extra mass and power in the electric motor will solve your original problems. The air unit is nice for light load ops like buffing a bore out a bit, but the big electric shines when you use a carbide burr or mounted point. Enjoyed the video, cheers and thanks.

[@jameslezak7882]

I mounted a variable speed palm router on my lathe. Heavier spindle and I'm able to use longer (within reason) shafts for the grindind stones. Plenty of power and no compressor needed! Great videos and thanks for you time and sharing! 👍😎✌️

[@goptools]

Hi Lee. You are right about the pneumatic die grinder needing a lot of air. Hopefully, the electric one will have enough torque for your purpose. I like the new camera angle at the lathe. It does give a much better view. Thanks for the video!

[@jastikawoodmetaldiyproject7276]

Mr Lee. I want to use the design to make a die grinder table. What is the final dimensions of the holes you drilled to hold the die grinder? I bought the same grinder and want to mount it. Appreciate your response. Like your channel.

[@FrancisoDoncona]

I abandoned my attempt because the grinding wheel of similar size are only rated to a few thousand rpms. Do better wheels exist or must I go smaller diameter like a dremel?

[@G1951-w1y]

Lee, was the lathe running in reverse? If not, both were running in the same direction. Kind of like climb milling as an example.

[@MrPragmaticLee]

Yes, lathe was in reverse. Thanks for stopping by.

[@G1951-w1y]

@MrPragmaticLee OK, just wondering. My lathe has a threaded spindle so any reverse work is out of the question.