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5th July 2019, 12:50 PM #1Most Valued Member
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Eccentric's Acute and Turnado Kits
Last October I posted some images of the Turnado radius turning attachment I had purchased from Gary Sneesby at Eccentric Engineering - https://metalworkforums.com/f65/t202...74#post1941874. I mentioned that I had also acquired the copy tracing attachment but hadn't built it. Well now I have along with the large radius shoe attachment but more importantly, building these attachments provided the momentum to tackle the more complex Acute.
The Turnado with its attachments -
Attachment 380521 Attachment 380522 Attachment 380523 Attachment 380524 Attachment 380525
Attachment 380526 Attachment 380527
And the Acute..
Attachment 380528 Attachment 380529 Attachment 380530 Attachment 380531 Attachment 380532 Attachment 380533
I won't bore you all with a zillion photos of their construction but I will point out a few things I learnt along the way. The most important is to never use a bent drill bit in an attempt to drill an accurately sized hole. One of the critically positioned holes in the Acute's workhead locates a locking pin to prevent the head's rotation. The arrow shows its position below. The hole was to be drilled 2.9mm and reamed 3mm. The bit I used was bent very slightly but I thought all would be well because it would be guided by the spot drilled hole. The 3mm reamer dropped through the hole and wobbled. Drilling the hole with a straight 1/8" bit resolved the wobble issue but took me very close to the edge.
tempsnip.png IMG_20190410_153507592.jpg
Most of the components hole locations have been CNC spot drilled. When I commenced work on the Turnado accessories I laboriously used the microscope to centre the holes and then drilled the holes by raising the mill's table.
In reality all the drilling could be accomplished using a reasonably accurate drill press with the items to be drilled clamped to its table. I resorted to using the 13's sensitive drilling attachment as well as the quilled high speed head neither of which facititate the use of the scope. I did clamp all but one item to the table. The unclamped item snagged and became a propellor!!. Many of the holes require tapping and having them remained clamped to the table provides a reasonable chance of concentricity along with verticality.
IMG_20190507_144357249_BURST000_COVER_TOP.jpg IMG_20190408_150017870 (Large).jpg IMG_20190414_122249928.jpg
The Turnado and Acute are wonderful examples of Gary Sneesby's ingenuity and inventiveness. I have to get on with modifying my GMF grinder to enable the attachment of the Acute to take advantage of that ingenuity and inventiveness.
Thank you Gary.
Bob.
Attached Images
- IMG_20190414_122249928.jpg (143.8 KB)
- IMG_20190410_153507592.jpg (72.2 KB)
- tempsnip.png (544.0 KB)
- IMG_20190507_144357249_BURST000_COVER_TOP.jpg (101.4 KB)
- IMG_20190408_150017870 (Large).jpg (135.7 KB)
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