Model Engineers’ Workshop – August 2019

42 http://www.model-engineer.co.uk Model Engineers’ Workshop

For the job in hand I have made an
adjustable stop. On the underside of the
disc drill and tap two holes for M6. Drill two
corresponding holes in a short length of
steel bar and bolt on, photo 28.
A length of angle iron has two M10 holes
drilled on one face to match the ‘T’ slots of
the milling machine table. The other face
has a slot milled to match the height of the

stop bar, photo 29. Two nuts and bolts are

fi tted into the slot to provide adjustable

stops, photo 30. A modifi cation for larger

work pieces will be a single post fi tted into

one ‘T’ slot and two steel bars fi tted to the

disc something like fi g. 2.

The operating handle is a steel bar

ground at one end to fi t into the vents

in the disc, also shown in Photo 30. As

a bit of a guide I printed out a protractor

and glued it onto the MDF, also shown in

the photo. The next time I will also print

ever decreasing circles which will aid when

mounting the work piece. Because the table

is larger than A4 paper size I had to print

out on two sheets of paper and make a joint

across the centre. While the rotary table

is centred under the quill bring it down to

21

22 23

24 25

Spring washers

Assemble with plenty of oil Centre the table under the quill

Tighten the base plate mounting bolts Information written in indelible pen