Steve Withnell | 04/10/2016 18:03:11 |
![]() 858 forum posts 215 photos | I was offered 5 of these reamers brand new in box. Although all the labelling was intact, there was no obvious sizing info. The only marking that I thought might be size related, on the box and the reamer was '3A-352'. Roughly 8mm on a MT2 shank. The manufacturer appears to be 'Bridge'. Any clues?
Steve
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Michael Gilligan | 04/10/2016 18:37:15 |
![]() 23121 forum posts 1360 photos | Steve, You could try asking these guys: **LINK** http://www.taylorandjones.co.uk/wp-content/uploads/2014/03/13.pdf MichaelG. |
Steve Withnell | 05/10/2016 20:12:52 |
![]() 858 forum posts 215 photos | Thanks MIchael. Steve |
Tony Pratt 1 | 05/10/2016 20:42:50 |
2319 forum posts 13 photos | Am I missing something, can't you measure them? Tony |
Ken Price 1 | 12/11/2016 14:35:07 |
7 forum posts | Usually with reamers, their size is stamped at the base of the reamer just above the end of the taper. However I have had reamers with no specific markings and these I found to made for the aircraft industry where very specific sizes are required not being standard metric or imperial sizes. I have undertaken subcontract work for this industry and frequently had to use such items.
Ken Price |
Neil Wyatt | 12/11/2016 15:07:14 |
![]() 19226 forum posts 749 photos 86 articles | Posted by Tony Pratt 1 on 05/10/2016 20:42:50:
Am I missing something, can't you measure them? Tony Not if they have an odd number of flutes, and they often have 7 or 5, I think it reduces chatter if they are an odd number and not perfectly evenly spaced. Neil |
NIALL HORN | 12/11/2016 15:47:34 |
![]() 49 forum posts 18 photos | Ideally, you need to find someone with a v-anvil micrometer. The angle of the V needs to be correct for the number of flutes - 60 degrees for 3 flutes, 108 degrees for 5 flutes and 128 degrees 34 minutes for 7 flutes. They are not cheap! An ordinary mike will not give a correct diameter. V-angle mics are also used to detect lobing on centreles-ground spindles. |
mark smith 20 | 12/11/2016 16:03:09 |
682 forum posts 337 photos | why dont you just drill a slightly undersized hole in something like 1/2" aluminium, put the reamer through and measure the hole size??? Or 352/1000" =8.94mm (but may be totally wrong) Edited By mark smith 20 on 12/11/2016 16:06:43 |
Michael Gilligan | 12/11/2016 16:11:15 |
![]() 23121 forum posts 1360 photos | Posted by Steve Withnell on 04/10/2016 18:03:11:
I was offered 5 of these reamers brand new in box. . Mark, I suspect that the reason for not adopting your very practical approach is evident from Steve's introductory comment. MichaelG. |
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