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Thanks everyone for your kind advice - good stuff.

Seems like the taper is the likely issue so I'll go and give it a good clean out.

Then if problem persists after clean I will *carefully/gently apply a 2MT reamer.

As this was a new member intro thread, will start another one when I report back - hopefully with good news

Thanks again for the advice on the MT2 Taper. Will proceed with caution.

I have the crackle grey painted model, made by Mole in Watford. Just the milling head, no base. It just seemed to me that an imperial size would be more likely. But thats just my unfounded assumption could just as easily be metric as original.

The lack of quill for drilling does make progress somewhat slow, but I don't have space for a separate machine so i'll have to live with it for now.

But I can def. see why you upgraded.

Have tried plain MT2 collets but they would not hang on to the tool securely even with a drawbar. An end mill would work its way out? Is there a way to stop that ?

Hi

Good question. I've measured the runout on my lathe spindle using an MT2 collect chuck and test bar ( home turned) and its less than 5 tenths If I then transfer that same chuck and test bar to the milling spindle I get over 4 thou. But, you are right that it could be that the taper in the Mill has a ding, it doesn't look great and there was some obvious rust in there when I first got it.

What are the options for fixing a damaged MT2 taper? Assuming the worst and its more then just a bit of grit in there. I gave it a good squirt of brake cleaner and a wipe out before testing.

I will remove the spindle and check for concentricity using v-blocks. That will confirm/deny another possibility.

am still a bit puzzled as to why it has metric sized bearings fitted.

Hello,

I've been on this forum a while and found it to be very helpful. There sure are a lot of knowledgeable folks on here.

I'm interested in learning machining skills, for no other reason than self improvement. I dont have a particular interest in model making - may be that comes later.

At the moment my skiils are pretty basic and I make lots of mistakes. Most of my projects come out looking as if gnawed from scrap by a demented owl.

Anyhow. In a moment of madness I recently bought an Amolco mill of dubious provenence. Of course on inspection it has a runout of about 4-5 thou. I have pre-loaded the bearings as much as I dare. So I'm thinking the bearings might be shot and need replacing.

On dismantling it I found that it is fitted with Steyr 302050C Taper bearings - which ~(I think)~ are metric?

Does anyone know if these are the correct bearing type? Seems strange to me that a metric bearing would be original fit?

Thanks in advance

Rich