Author Topic: BCA Mklll query  (Read 101 times)

Offline astroud

  • Jr. member
  • **
  • Posts: 1
BCA Mklll query
« on: April 19, 2019, 05:36:16 PM »
Hi any BCA users

I have BCA Mklll and wondered why there is a hole through the table. At the bottom there is a female thread, 3/8 BSW as far as I can determine and it does not rotate with the table.
Were there any accessories available which made use of the hole or thread or is it just there for the user to make use of as may be needed to hold or position  work on the table.
I would be interested in seeing any fixtures or tools that make use of the hole. I can see a collet would be useful.

I also worry about swarf going down the hole and causing problems, is this an unnecessary worry ?

thanks  Andrew 

Offline Rod999

  • Jr. member
  • **
  • Posts: 1
Re: BCA Mklll query
« Reply #1 on: April 19, 2019, 05:59:29 PM »
I think the thread does go round with the table, and I saw a photo of a "center point" of about 3/4 inch, which may have been screwed into said hole, as it was sitting in the center. However, I was thinking about asking the same question, as many fixtures I see, I would have never thought of myself!!
                       Rod

Offline Jo

  • Administrator
  • Full Member
  • *****
  • Posts: 12191
  • Hampshire, england.
Re: BCA Mklll query
« Reply #2 on: April 19, 2019, 06:04:53 PM »
The hole is for centring the table under the spindle and things on the table.

I have never felt the need to use the thread in the bottom of the hole I normally use collets in the hole. For flat table use I have a plug that fits level with the surface with a grubscrew in the middle so I can fish it out again.

When I drop something down the hole  :facepalm2: I use one of those long flexible grabby things with four fingers to recover it.

Jo
Usus est optimum magister