Recent Posts

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91
Tools / Re: Bench Grinders & Lathe Tools.
« Last post by vtsteam on July 14, 2017, 08:19:49 PM »
I think side pressure on the wheel is probably considered bad because you're putting the wheel sideways in tension, which isn't the forte of most forms of ceramics. Also the possibility of wearing a groove and making a stress riser there. That plus vibration. Well and getting something caught between table and the stone, and really jamming that side pressure on.

Having just proposed that theory, I use the side of the wheel all the time, and use wheels 10 years old. I also grind lathe tools on the front of the wheel often, and live with the hollow grind that results. In other words I do everything totally wrong.

In defense of such foolishness, I start the grinder and stand away for a half minute, and just keep the above worries in mind, dress (not seriously grind) only small (1/4") HSS lathe tools on the side of the wheel (mainly for top rake), use light pressure, avoid making grooves, etc. In other words I use what I think is common sense -- others may disagree -- and they might even be right!

I don't try to shorten big bolts on the side of the wheel, nor axeheads, nor staging nails. Or even initially shape a lathe tool there. A manufacturer sells grinders to all kinds of people, who do all kinds of things to them, so if I were a manufacturer, I would not only tell the public not to grind on the side of the wheel, but not to grind on the front, either.  Rather just put it in the shop to admire.
92
Tools / Re: Bench Grinders & Lathe Tools.
« Last post by Pete. on July 14, 2017, 06:39:31 PM »
The single best piece of advice I can give you is get hold of a good dressing tool. I can't stand to grind on my bench grinder now until I give the wheel a quick swipe to open it up. It really makes a world of difference not only in terms of grinding speed but also in heat input. A dull wheel grinds slowly and heats up the part quickly.
93
Tools / Re: 7 1/4" Table Saw
« Last post by vtsteam on July 14, 2017, 06:07:03 PM »
Thanks cfellows, I know. I was trying to gently suggest you follow the 800 pixel max convention when posting here on the forum.  :beer:
94
Tools / Re: Bench Grinders & Lathe Tools.
« Last post by fatal-exception on July 14, 2017, 05:40:43 PM »
I use the side of the wheel all the time and have been doing so for 30 years and have never had any problems. Maybe they don't want you using the side because the tool rest usually dosen't wrap around the wheel? I say use any part of the wheel required to get the result you need.  :beer:

Paul
95
Oooops! / Re: Indexing Dial
« Last post by fatal-exception on July 14, 2017, 05:27:26 PM »
For simple indexing like that I use Excel to generate the code. No errors that way, and lightening fast to change if you want something different.

You could also look into using subroutines and indexing a value in the routine each time you call it. If you have the Mach3 manual, I think there's some examples of how to write simple subroutines.

Paul
96
How do I?? / Re: Centec 2A vertical head help needed.
« Last post by srp on July 14, 2017, 04:52:18 PM »
Have you had any luck with this yet? If not I may be able to help - do you mean the small quill lock located at the bottom end of the casting, at the front of the head?
97
The Water Cooler / Re: Mia's Engine, Recycled......
« Last post by Stilldrillin on July 14, 2017, 04:42:27 PM »
Rod... Steve.

Thanks Fellas!  :thumbup:
98
Tools / Re: 7 1/4" Table Saw
« Last post by cfellows on July 14, 2017, 12:53:09 PM »
If you right click on the image, you can select and copy image address, paste into your browser address, hit enter and see the image directly from the imgur.com website.
99
CNC / Re: DDCSV1.1 4 Axis controller
« Last post by C6MFG on July 14, 2017, 10:04:34 AM »
Andy,

Oh well...Thanks for the info!

Jason
100
Neat Stuff / Re: A very interesting video!
« Last post by mattinker on July 14, 2017, 09:59:35 AM »
Part of the process of sharpening a scythe is known as peening - the term relates no doubt to ball pein hammer etc. It's quite an art as you might expect. https://scythecymru.co.uk/scythes-for-sale/peening/

Peening has several uses, apart from drawing out and straightening blades, it is also used on welds to relieve stresses and to straighten bent bars. Peening can be done with a hammer or a needle gun. The pein refers to the "other" side of a hammer eg cross pein straight pein are peins, as much as ball peins!
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