Member postings for ega

"touch controls no longer worked - seems to be a common issue"

That's what did for my microwave oven and at least one remote controller (although the latter can be fixed).

Ray Pope:

Just picked up your PM without problem and have PMd back. If you still don't receive my PM I suggest you tell me via this thread.

For me, the errors often don't appear until I have the printed copy in my hand.

Mike Poole:

I had overlooked the likelihood of the spell checker being involved - surpassed only in destructive potential by predictive text!

Zan:

Good point about getting the tapers to match although I don't think it occurred to me when I made mine (or to GHT?).

I agree that the reamer is relatively straightforward to make but the OP clearly did not want to do so.

My objection to the majority of inserted tip tools is the overhang. That said, I am pleased with the ISCAR tangential parting tool I have on the other lathe; it is mounted in a GHT style RTP.

Ray Pope:

Still hoping to hear from you.

An advertiser in MEW is offering an "Adonis Q/C toolpost"; users do find their QCTPs very attractive but perhaps this goes too far.

Have others had their ads mangled in similar ways and did they still manage to sell?

Michael Gilligan:

Thank you. The answer seems to be in the last paragraph of the patent (which I assume has now expired).

I suppose another "proof" of a sort would be to compare the readings from the same setup using both spherical and pear-shaped styli.

Ray Pope:

Bumping your thread as it looks as though you may not have read my PM.

If you no longer want to borrow the tooling I will return it to store.

Bill York:

"The heads on the M75 and the T90 lathe were interchangeable." Seems like an excellent idea. I recall that the Dore-Westbury mill had a Myford spindle nose.

SOD:

Great stuff! Machine tool manufacturers blithely specified a specific brand of oil ignoring the possibility that the oil industry might move on; they would have done better to provide the specification (no doubt some do).

I was glad to get confirmation of this point and, having followed up your helpful link, I see that I should have said eliminate rather than mitigate ie Verdict claim accuracy within the angular limit given. Their diagram is rather small and they don't give the underlying maths; I was hoping that some of our more scientific members - you, perhaps - would weigh in with the proof.

Andrew Johnston:

I have just installed a pear-shaped collet tray on the lathe; so far it hasn't gone belly up!

Nice-looking machine and interesting that the spindle nose appears to be similar to that on the Mikron lathe the subject of another thread.

I assume Gargoyle was a foreign company?

The remedy when slitting into a bore would be to fit the bore with a temporary, tight-fitting plug.

Some may remember Derek Beck's First Affaire with a Lathe series in ME in which he described building a milling spindle using (from memory) "Glacier DU" bearings. As I recall, when he was running in the bearings tiny fragments of PTFE were released.

I don't think anyone mentioned the phenomenon of the work closing on the saw towards the end of the cut; I understand this is due to the release of stress within the material and in my experience can be strong enough to arrest the saw. On the occasions when this happened I was using a shop-made arbor without a key and with RH nut and RH rotation.

I now have an MT3 arbor with LH nut which casts doubt on the Myford theory.

I think Verdict claimed that their pear-shaped probe mitigated the error.

I agree that the DTI is more likely to be useful to the ME.

I forgot to say that the adjuster was subsequently modified to work also with the standard top slide.

The PCD tooling sounds very useful.

Pete Rimmer:

Was it this kind of thing you had in mind?

The adjuster screws can be seen bearing on the "topslide" base (it is actually a cross slide adopted for its extra length in boring a taper in work supported by bush-type steady).

PS I meant to say pilotless *hole saws* (and the one in question was actually 70mm diameter.

Thanks for the tip about pilotless centre drills. I tried this today with a 74mm hole saw on some 3mm plastics sheet; undemanding material but I was impressed by the ease of the operation.

The drawing in GHT's Manual does indeed show two flutes formed by an end mill; looking at mine now I see I opted for three flutes possibly having in mind Len Mason's suggestion that odd numbers seem to work better. For milling slots GHT recommended slot drills over end mills for the reasons given in the same work.

Ray Pope:

I will send you a personal message; look out for your Inbox button (second from left at top of page) to start flashing.