06-11-2017, 12:05 PM
I have just been pondering this while in the shower and a mandrel that has a vee in the top (going accurately through the centre line) and a flat surface on the other end would be a simple way of indexing it.
Also, I could do like I said above regarding getting the bosses at the same height but instead of doing it on a surface plate I could just do it off the mill table.
It just needed a bit of thought. I am sure that someone who does this regularly would think its obvious.
Maybe I am over thinking it but the reason I am "over thinking" it is because I have already had 2 pistons machined by someone else and they have ruined them (one of the things wrong with them is that the gudgeon pin holes are not bored correctly) . I am now waiting for the foundry to call me to tell me that my replacements are ready.
John
Also, I could do like I said above regarding getting the bosses at the same height but instead of doing it on a surface plate I could just do it off the mill table.
It just needed a bit of thought. I am sure that someone who does this regularly would think its obvious.
Maybe I am over thinking it but the reason I am "over thinking" it is because I have already had 2 pistons machined by someone else and they have ruined them (one of the things wrong with them is that the gudgeon pin holes are not bored correctly) . I am now waiting for the foundry to call me to tell me that my replacements are ready.
John