123hotchef
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something more acurate,
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tinman123
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yeah, i seen draper ones for about that much but i like the old school stuff, it has some age to it and hopefully i can make it work.
is it the drill guide tab to get the angle right i take it.
that would slow it down alright.
in my case i could have 5 or 6 of a certain size to sharp each time so it would put some gloss on it i suppose.
or graduate it somehow so once its set you can repeat it, for the common sizes at least.
tinman123
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something that i dont have to spend the christmas bonus on anyways.
i know what 1500-2000 would get me but id hand sharpen for that kind of dough.
altho sharpening milling cutters interests me, a dear hobby especially when you can get em done for 3-4 quid a pop.
maybe some day, but bigger fish have to be fried first.
this covers a lot of bases, you have to finish it off but if you want to buy it all done its $600 for the luxury.
there id be a bit of machining on it but its nearly there, not too far out of the way at $250 odd.
it can do milling cutters as well.
http://www.eccentricengineering.com...category_id=32&option=com_virtuemart&Itemid=3
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outofthefire
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I don't think there is a cheap option that will fulfill your requirements. We've got a drill doctor at work but i've never seen anyone use it, everyone just does it by hand. My eyesight's not good enough for bits under 5mm but they're cheap enough to throw away.
tinman123
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sorry lad about the late reply, ive been flat out of late.
youd be right there i know, but there would be the possibility of modifying/making something that might cover most of the bases while staying cheap'ish.
after doing some googling before there are home made options that dont look too bad altho the time to make up something seems ever so scarce.
im in no rush at the mo but some day ill put together something and see would it work.
failing that i just buy something.
http://www.mig-welding.co.uk/forum/threads/drill-sharpening-jig.67418/#post-882768
Just posted this in another thread.
Might be worth project for a few of us to collude on?
Never saw it till after I posted mate. I get a daily post in my emails about home made tools and thought it would be good for all to see.
Maybe the mods can combine them??
Actually I just noticed I posted it 6 mins before your reply the last post was 1st of October so was not in my new post list.
Agroshield
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A step above the normal eBay cheapies is the Proxxon one for about £150.
It works very well up to 1/2" or 13mm. It does the proper backing off of the cutting edge and this can be adjusted.
For short, small drills, it does not work well but all it needs to fix it is a simple adaptor sleeve that effectively just makes the drill longer. I think a straight shank ER8 or ER11 collet holder could be used for this.
For broken drills, it's better to use a bench grinder to put a simple 120 degree conical point on the drill and then use the Proxxon one to finish and back off the drill. This saves wear on the wheel.
Like with woodworking tools, the trick is to touch up the drill when it starts to dull and not to wait until it is totally destroyed and then do a full regrind.
For larger drills and considerably larger price, there is a Vertex one (and now lots of Chinese copies) that uses ER collets in reverse.
tinman123
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with the thoughts of a drill sharpener in mind i was at an auction 2 weeks ago where an engineering company was having a clear out and in the lots was a brierley tool sharpener.
so when in Rome n all that, i ended up buying it.
i didnt steal it but seeing since they are gone out of business, a uk company and are talked to be up with the best if not just that i thought id have a punt.
they seem to have been round 6-7k new so i got good enough value.
i got the time to have a play with it this evening for an hour until i was dragged away to play hide n seek with our soon to be 5yr old girl.
times you have to appreciate the simple things in life too.
anyways, whoo wee she is some machine to sharpen a drill, i only done a few 9-10mm with it but the finish it leaves is just stunning.
i didnt take any pics of the bits i done but ill throw some up when i get another play with it.
i know we all can sharpen drills by hand but this thing is precision at its best.
i might keep it or i might shift it on but for now and with the wee bit i done with it, i see now what all the fuss is about.
just thought id add it to this thread when i was on about sharpening drills.
so when in Rome n all that, i ended up buying it.
i didnt steal it but seeing since they are gone out of business, a uk company and are talked to be up with the best if not just that i thought id have a punt.
they seem to have been round 6-7k new so i got good enough value.
i got the time to have a play with it this evening for an hour until i was dragged away to play hide n seek with our soon to be 5yr old girl.
times you have to appreciate the simple things in life too.
anyways, whoo wee she is some machine to sharpen a drill, i only done a few 9-10mm with it but the finish it leaves is just stunning.
i didnt take any pics of the bits i done but ill throw some up when i get another play with it.
i know we all can sharpen drills by hand but this thing is precision at its best.
i might keep it or i might shift it on but for now and with the wee bit i done with it, i see now what all the fuss is about.
just thought id add it to this thread when i was on about sharpening drills.
brightspark
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nice machine they normally fetch over 6oo quid at the auctions
tinman123
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youd be right there.
altho its mostly the older models that make that kind of money, and other brands but quite a few dont go up to the 32mm mark, 25mm id more the norm with up to 12mm max on the likes of a black diamond sharpener which id set you back $7-10,000 new dollars today.
this one is about the last they made, it governs more money from the bit i did see but most prices were inquire, which normally means dear.
best guess these will go for between 1,500 to 3k depending on condition and tooling that came with it, for you dont want to be buyin that.
cumbriasteve
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You speak for yourself
, there's not much I can't do but sharpening drills has always beaten me, been shown by the best and still can't get it right.Actually been making a jig today similar to the youtube wooden things, rough prototype finished and first results are promising, 12mm drill looked about right and went through a bit of angle with some nice swarf lengths.....more fiddling to get spot on this week.
tinman123
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if you understand whats happening when the drill is doing its thing, and how the angles and reliefs work then sharpening a drill will get easier.
the lecturer i had back in college 25 yrs ago could sharpen a bit something real good, altho he used to say he was sharpening them for over 30 yrs and still didnt get it perfect.
in the grand scheme of things, he was s*** hot.
you should get yourself a drill gauge, it ill have the right angle on it for you to aim for on the grinder.
after you get that mastered you work the rake angle behind the edge.
you will get inot the swing of it in no time if you watch a few lads on the tube at it (the good ones) and practice makes perfect.
the tricky bit is getin the two edges even, watch your chisel point for your guide there.
times id sharpen a bit on the linisher and it ill cut the best, its the mill and lathe id like to be exact on, but thats just the way i roll.
i did wonder if there was a earner in it tho.
a good old sharpening service.
the lecturer i had back in college 25 yrs ago could sharpen a bit something real good, altho he used to say he was sharpening them for over 30 yrs and still didnt get it perfect.
in the grand scheme of things, he was s*** hot.
you should get yourself a drill gauge, it ill have the right angle on it for you to aim for on the grinder.
after you get that mastered you work the rake angle behind the edge.
you will get inot the swing of it in no time if you watch a few lads on the tube at it (the good ones) and practice makes perfect.
the tricky bit is getin the two edges even, watch your chisel point for your guide there.
times id sharpen a bit on the linisher and it ill cut the best, its the mill and lathe id like to be exact on, but thats just the way i roll.
i did wonder if there was a earner in it tho.
a good old sharpening service.
daleyd
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The used drill bits in Airbus go for sharpening, I'm guessing they are done mechanically though as I can't imagine them letting anything hand sharpened near an aircraft, however good the guy may be!
tinman123
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when you would be at that elevation you can be sure they are paying a lot for precision sharpening.
you cant oversharpen a drill tho, it can only be right for its application.
that brierley machine i have is about as good as it gets, that is unless you want to split degrees into seconds but i dont know of any drills that would need to be that precise or for any reason.
you cant oversharpen a drill tho, it can only be right for its application.
that brierley machine i have is about as good as it gets, that is unless you want to split degrees into seconds but i dont know of any drills that would need to be that precise or for any reason.
daleyd
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Yeah, for sure hand sharpening would be fine for probably 90-something % of applications (100% of the rough ar5ed stuff I do!!). I really only mentioned it as my father in law works for a contract cleaning company in there and all the drill bits he collects when the jigs get swept down are sent away for checking and sharpening. (Well, maybe not all....)
