| The Breakroom > The Water Cooler |
| Drill Doctor |
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| Manxmodder:
1) My first instict was as described in the previous post to use DD setting for cutting depth and aproximate lip angle adjustment, tighten a disc/collet something to lock the depth in relation of the chuck, but allow angular adjustment and then use different fixture for optical angle adjustment. 2) Second idea was to use two V:s or something to support DD chuck and then have a plastic transparent endstop and simple craticule. Drill point is gently placed on the stop for depth and vieved from the front parallel to lines (perimeter of the craticule matked few common settings and can be turned to set desired angle), but there would be some wear. Maybe a easy to change transparent stop piece? Yes,that is the problem explained nicely. An optical or mechanical jig or mechanism that preserves the length setting while allowing angular adjustment would likely produce far better overall sharpening results......OZ |
| howsitwork?:
Pekka thanks for the update on the drill doctor. Hadn't considered the helix angle ( oops) effect on point but always wondered what the notches either side of 118 were for! Generally quite happy with mine although split pointing with it is sometimes a bit hit and miss ( or not terribly even ( operator error no doubt)) There's some quite nice microscopes on e bay currently Rob ? Possibly take more water with the Newcastle brown? Happy Christmas one and all! Ian |
| Manxmodder:
One of the greatest shortcomings with a device like the Drill Doctor is the very small diameter of the grinding wheel. With a wheel of far greater diameter I reckon the quality of the results would be far less hit and miss...OZ |
| PekkaNF:
Ian, I'm having trouble on splitting too. I think that if the this initial setting is not perfect, it messes up with splitting setting too. And there reall is no aditional adjustment for depth or antything beyond initial depth/angle setting. Therefore, initial setting is very important and it has to right despite of distractions of helix and other factors. Pekka |
| howsitwork?:
Pekka having looked at the set up I am sure you're right. The only adjustment you have is length of splitting by retracting or extending the adjuster that determines the amount of drill ( length extended ). I will try some scrap drills when next using the DD and see what a difference retarding or advancing the holder on the drill either side of the 118 mark when setting up has on point splitting. Hey its all good fun (?) Have a happy New Year Ian |
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