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| cutter/griders again |
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| raynerd:
--- Quote from: loply on January 06, 2013, 03:41:16 PM ---I can't see that a hobbyist is going to dull enough end mills to make it economical to equip himself with a good resharpening jig. --- End quote --- ? Loply, is there not something about learning to use a CG that is also attractive? As well as the added benefits of being able to sharpen accurate and complex tool profiles that are not common or even available. As well as the other options provided by a cutter grinder - even light surface grinding I believe on the quorn and a few other machines. Don`t get me wrong, my intention over the next year is to make the Harold Hall device as I agree that a cutter grinder is too expensive and extravagant for me right now but I do believe a cutter grinder will one day by in my workshop if I find one at the right price. Chris |
| DavidA:
Loply, You seem to have bought into the throw-away ethic. Just an observation. Dave. |
| mattinker:
I didn't even try to justify buying my Clarkson MKI, I've bought up quite a lot of second hand tooling over the years, mostly HSS. Between the milling tools I've broken (wrong way rapid crashes when learning) and the second hand stuff that just needs freshening up, I won't have to buy much tooling! Making the tooling for the Clarkson is fun too, it only had centres when I bought it. I've built a universal vice, an MT3 tool holder and a drill sharpening tool (which I can sharpen a 50mm bit on). The next tool for it will be a small bit sharpening tool, theoretically down to 0.5 mm. If I remember correctly, I paid £120 plus shipping to France, €60 (a special deal!). It doesn't cost much to make the tooling, there is plenty of information on the web . Regards, Matthew |
| Fergus OMore:
I have deleted my 'maths' version of grinding angles on tools- because of seemingly lack of interest. As for buying tools, I also live in Newcastle upon Tyne/Newcastle upon Tyne! I bid for a Clarkson Mark1 some where in South Durham and won at £100. It had centres and nothing else. as an old man, I couldn't even lift the pedestal but came out with a free electro magnetic chuck. I swopped gears for a radius attachment etc. The 'wheels' were sensibly brand new- bought locally. Those in Newcastle 'could' have bid because I'd limited my bid- because I had made a Quorn. I'd already seen an ad nationally for a mill drilll which was around the corner- five minutes away. The mill was 'rubbish' but I came out with all the castings and motor etc for a little Kennet grinder- for £85 and for something more- a set of Myford imperial collets and holder! The guy would not get any more for his old Myford because he would -have to throw them in. I came out with -half a Pultra lathe but that is another story! So I 'd bought a few Stent castings from Blackgates after dumping my daughter in Leeds Dental School. I had a bit of meehanite for all of 3 quid but needed a motor to drive it all. Another ad nationally revealed a local Stent was at Sunderland( a few miles away) and it went into my car for all of £100 which was a thord the price of a motor. Well, the Stent was scrap because it has all steel and fabricated. Except that it works-beautifully- and is actually more refined than the Clarkson or the Kennet. So it is no use complaining about prices or even missed opportunities. On Friday, I paid more than the total amount involved- just for a couple of tyres( tires) Next, I was fiddling with a £3 bit of Meehanite and a base casting and not much more for a 'long wheel base ' Stent grinder. The motors are far from cheap and |
| Meldonmech:
Hi Fergus, What amazing bargains you have aquired, you will certainly have an interesting new year, I built the Stent many moons ago. I added several additional features, the most useful was a rotating and tilting work piece head, which is bored no,2 morse taper and the nose threaded to take Myford collets. Sharpened many milling cutters over years, and done a small amount of surface grinding. I finished the Quorn last year, and had to mod. some items,to make it work. The best mod. was adding a Stent type device to accurately raise and lower the wheel head. If you need any help re pics, drawings, sizes etc. feel free to PM me. Cheers David |
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