Upright machining?

[Davey]

A couple of points are coming to light here, firstly the question of the correct taper, I'm using Granada uprights and I'll check them for the taper before I go reaming anything out. Secondly is a comment someone made about using a reamer, you do not use it like a tap. You should never turn a reamer backeards as it blunts the cutting edge. With a tapered reamer you simply lift it out of the hole every so often while turning it forwards.

D.

[RAYLEE29]

Originally Posted by Davey

A couple of points are coming to light here, firstly the question of the correct taper, I'm using Granada uprights and I'll check them for the taper before I go reaming anything out. Secondly is a comment someone made about using a reamer, you do not use it like a tap. You should never turn a reamer backeards as it blunts the cutting edge. With a tapered reamer you simply lift it out of the hole every so often while turning it forwards.

D.

whilst i agree with what you say it is a known practice to run reamers backwards in some situations doing so can give a tighter hole size especially if the reamer is new and could cut oversize due to being too keen obviously you need to know what your doing so unless your an experienced engineer dont try it at home
Ray

[Davey]

Originally Posted by RAYLEE29

whilst i agree with what you say it is a known practice to run reamers backwards in some situations doing so can give a tighter hole size especially if the reamer is new and could cut oversize due to being too keen obviously you need to know what your doing so unless your an experienced engineer dont try it at home
Ray

A reamer can't cut oversize unless its in the hands of an ape. That's the whole point of a reamer, to accurately make a hole to specified size. And I stand by my comment that a reamer should never be turned backwards, ever!

D.

[RAYLEE29]

Davey this is a forum and your entitled to your opinion
but im right and your wrong lol
never mind moving on
.3mm is about 12thou so over 8cm is about 1.5 over 1cm so not really alot in it to worry about
so either should be fine
Ray

[Davey]

Ray I'll agree to disagree with you . I do agree about the taper, its close enough to not be an issue.

D.

[Talonmotorsport]

Thank god thats all over.......so about this reamer where's it from and what does it do again??? only joking

[twinturbo]

Originally Posted by Talonmotorsport

Thank god thats all over.......so about this reamer where's it from and what does it do again??? only joking

/
It cuts a hole the wrong shape, but the differance over the distance is so small it does not matter.

It's available from all good carpet suppliers by all accounts.

TT