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Инструкция Страница: 8

Trend ME/JIG Инструкция онлайн [8/13] 867619

Trend ME/JIG Инструкция онлайн [8/13] 867619

-8-

ME/JIG

Setting Minor Axis

■ Position router cutter over minor axis mark,

slide main frame until cutter is positioned over

mark and check that index washer on pivot

point ‘B’ reads 180mm, then lock knob ‘B’.

Setting up of the Mini Ellipse Jig is now

complete. Alternatively the positions of the pivot

points can be set before locating the pivot points

onto the slider pins using the measurement

scale. The calculation requires simply halving

the major and minor axis and allowing for the

cutter diameter.

Fixing Methods

The workpiece should be fixed onto a false or

waste piece to stop you damaging your work

bench.

There are many methods depending on the

application as follows:

1. 'G' clamps should be positioned outside the

swing area of the jig.

2. Camclamps are ideal as they will not

obstruct the jig. An adjustable camclamp jig

can be made for various sizes of ellipses.

3. Double-sided tape Ref. X/05/019 can be

used and rolled off easily after operation.

4. Spot gluing with a hot melt glue gun will

allow the workpiece to be prized off with

minimal surface damage.

5. Panel pins are a quick and easy method

providing the small holes are acceptable.

Choice of Material

Whilst it is perfectly possible to produce frames

with solid panels of natural wood, there will be a

weakness at the short-grained parts of the

ellipse. The frame will be delicate and liable to

break at these points unless care is taken. A

more professional approach is to use a series of

mitred jointed sections which overcome the

cross-grain problems and give an attractive

grained finish. Sections can be dowel or biscuit

jointed to give strength to the frame.

Routing Operation

■ Fit cutter, switch router on, plunge in and

make repeat sweeps with the router at 3mm

steps.

IMPORTANT!

Note that when cutting or central

panelling, one can reverse direction

of feed to stop the electric cable

becoming twisted. However, when

edge moulding and cutting, feed

direction must be opposite to that

of the cutter.

IMPORTANT!

Care should be taken on the last

cut prior to break through, as the

resultant ellipse or circular plaque

or ring can possibly move. Double-

sided tape can be used to

eliminate any danger of this

occurring.

■ Trial runs should be made on scrap material

when first using this Jig.

Minor Axis

B

A

Weakest points & possible

poor/rough finish

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