Nige | 01/08/2017 20:45:35 |
![]() 370 forum posts 65 photos | I have this pair of parallels; if i wanted to get a longer set what sort of parallels am I searching for please? |
JasonB | 01/08/2017 20:47:24 |
![]() Moderator 22750 forum posts 2653 photos 1 articles | Big ones! Useful when setting up large parts for machining on a mill able or cross slide, really too big for stuff in a vice. Might also do as your straight bit of bar to clock your spindle Edited By JasonB on 01/08/2017 20:48:28 |
John Stevenson | 01/08/2017 20:49:52 |
![]() Moderator 5068 forum posts 3 photos | Most probably home made by an apprentice |
Tony Pratt 1 | 01/08/2017 20:50:09 |
1963 forum posts 12 photos | They look like a custom made pair, in my Tool making days everyone made their own. Tony |
Nige | 01/08/2017 21:13:32 |
![]() 370 forum posts 65 photos | They are a fraction over 3 1/2 inches long and both stamped G.K.B. on both ends. I think you may be right in saying they are an individuals custom made pair. I was hoping they were a standard item so O could get a longer one. JasonB: it was clocking the spindle I was thinking about. If I use a piece of studding through the spindle to hold it against the mandrel face I can have 3 inches out to one side which is more 'flat length to run a clock down than I would have got with a back plate. rotating it will also indicate any run out ??? |
SteveI | 01/08/2017 21:50:33 |
248 forum posts 22 photos | It will only indicate "run out" (spindle misalignment) if it is perfectly flat and after you have used shims. If not it will indicate the sum of the misalignment plus the errors from it not being flat. My post wasn't perhaps the clearest. |
Neil Wyatt | 01/08/2017 21:56:46 |
![]() Moderator 19033 forum posts 734 photos 80 articles | Not wishing to be rude, but have you got a lot more mystery bits? It might keep the forum a bit tidier if you post them all in the same thread... Neil |
Rik Shaw | 01/08/2017 22:04:26 |
![]() 1483 forum posts 398 photos | I have a collection of parallels but they do no always meet the particular need / sizes I require. Only recently I bit the bullet and purchased a set from ARC: These are the business and are very handy indeed. Just a shame they are out of stock at the moment for anyone interested. Rik |
Howard Lewis | 02/08/2017 00:07:21 |
6111 forum posts 14 photos | Nige, You obviously inherited a load of useful stuff, (and these parallels are in that category). DON'T dump it; keep it and find a use for it. "It will come in handy, one day" Howard |
JasonB | 02/08/2017 07:32:17 |
![]() Moderator 22750 forum posts 2653 photos 1 articles | Nige, most I have seen like that are more like 6" long, anything less will not be suitable for use as per the other thread |
Lambton | 02/08/2017 08:23:25 |
![]() 694 forum posts 2 photos | Nige, They are perfectly standard design parallels and were indeed sometimes made by apprentices but commercial ones are common. I have several sets of this design. If you want "modern" parallels have a look at those offered by ARC Eurotrade. When deciding what type to buy consider your machine vice jaw height as one common use for parallels is to provide precision packing under work pieces held in a machine vice. I have no connection with Arc other than being a long standing and very satisfied customer. Eric |
Nige | 02/08/2017 17:52:00 |
![]() 370 forum posts 65 photos | Sorry Guys, Neil was right to mention my prolific posting |
Brian H | 02/08/2017 17:59:36 |
![]() 2312 forum posts 112 photos | I'm certainly not going to say Whoaa Nige, I think that the diversity is what makes this forum so interesting. Brian |
Bazyle | 02/08/2017 18:42:37 |
![]() 6324 forum posts 222 photos | What is it'' s are fun as it gives us a chance to realise just how much we know, or don't. |
Neil Wyatt | 02/08/2017 19:27:38 |
![]() Moderator 19033 forum posts 734 photos 80 articles | I wasn't trying to cut Nige off in his prime, I just think it might work better if all these discoveries went in fewer threads - there are several about lathe tools that might make more sense if they were all in the same thread. |
Nige | 02/08/2017 19:51:46 |
![]() 370 forum posts 65 photos | Neil, I agree entirely and didn't feel cut off and I hope others will take all this in the helpful spirit it was all meant |
Rainbows | 02/08/2017 20:45:52 |
647 forum posts 225 photos | Having a mystery bits identification forum section sounds like a nice idea. |
Andrew Johnston | 02/08/2017 21:00:00 |
![]() 6602 forum posts 701 photos | Posted by JasonB on 02/08/2017 07:32:17:
Nige, most I have seen like that are more like 6" long, anything less will not be suitable for use.......... Oh fudge: Andrew |
Saxalby | 02/08/2017 21:04:15 |
176 forum posts 26 photos | Agree with john S, made exactly the same as apprentice Edited By Saxalby on 02/08/2017 21:05:57 |
Andrew Johnston | 02/08/2017 21:23:48 |
![]() 6602 forum posts 701 photos | I have a range of 3" blocks, and a set of four 6" parallels, made by the same toolmaker as the ones shown above. I use them all the time in my machine vice. Then again my vice is possibly bigger than average. Andrew |
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