|
Posted by Martin Whybrow on August 3, 2008, 5:10 pm
Please log in for more thread options
> Martin Whybrow wrote:
>>> I've decided to add a piston type quick change toolpost from Chronos
>>> (same as the Arc Euro one) to my Bantam 800 (MK1); the problem is that
>>> the current toolpost is retained by a large diameter clamping bolt
>>> (looks to be about 1 1/4" or 32mm diameter) threaded into the top slide
>>> and there is no obvious way to mount the new toolpost, i.e. no T slots.
>>> I thought about machining a threaded plug to go into the existing hole
>>> and locking it in somehow and mounting the new toolpost to that; any
>>> other suggestions?
>>> Martin
>>> --
>>> martin<dot here>whybrow<at here>ntlworld<dot here>com
>>>
>>>
>> Well I described the topslide completely wrong; it has a tubular boss
>> about 1 1/4"mm diameter and perhaps 1 1/2" to 2" tall that the toolpost
>> locates on and that is threaded to take the hold down bolt which is
>> approximately 3/4" in diameter. I guess I'll need to bore the QCTP to
>> receive this boss instead. If anyone's fitted one of these to a MK1
>> Bantam, please tell me how you did it!
>> Martin
> Hi Martin,
>
> Is that boss part of the topslide casting or maybe you can remove it and
> make up a more suitable part to fit?
> Must admit I did not look that closely at the tool post when we collected
> the machines.
> Bob
I've had a better look today, the boss is part of the casting and it's 1
1/2" in diameter and 1 5/8" tall. I probably should have looked a bit more
closely before I bought the toolpost but I was getting fed up looking
through my collection of packing trying to get on centre height with the
assortment of tools I've got, most of which are more ML7 sized than Bantam
sized.
The lathe's going well by the way, I'm gradually working my way through the
list of missing or broken parts (not too many broken bits, thankfully).
Martin
--
martin<dot here>whybrow<at here>ntlworld<dot here>com
| 
Yahoo! 
Google 
Windows Live 
del.icio.us 
digg 
Netscape 
XML Sitemap
> as the Arc Euro one) to my Bantam 800 (MK1); the problem is that the
> current toolpost is retained by a large diameter clamping bolt (looks to
> be about 1 1/4" or 32mm diameter) threaded into the top slide and there is
> no obvious way to mount the new toolpost, i.e. no T slots.
> I thought about machining a threaded plug to go into the existing hole and
> locking it in somehow and mounting the new toolpost to that; any other
> suggestions?
> Martin
> --
> martin<dot here>whybrow<at here>ntlworld<dot here>com
>
>