Manual Proxxon DSH-E (page 13 of 20) (English)

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undertensioned, the saw blade can lightly crack. Turn knurled

button 1 to set the tensioning. If the button is moved to the

right (clockwise), the saw blade is more tightly tensioned. If it

is turned to the left (anticlockwise) the blade is loosened.

A correctly tensioned blade sounds a slight tone if "plucked"

like a string.

8.7.5 Removing saw blade (fig. 5a and 5b):

8.7.5.1 Saw blades with cross pin (fig. 5a).

1. Position the quick tensioning lever 4 to the front

2. Press top arm 5 slightly down so that the saw blade 1 can

be released from the top mount 6. Take out saw blade.

3. Take out saw blade from bottom mount 3 and remove

through table opening 2.

8.7.5.2 Saw blades with plain ends (fig. 5b):

1. Position the quick tensioning lever 4 to the front.

1. Open wingnut 8, the saw blade 1 releases from the top

mount 7.

2. Open cheese-head screw 7 with the T-handle Allen key 5,

release saw blade from the lower mount 3 and remove

through the table opening.

9 Working with the saw:

9.1 General information for working with mechanical scroll

saw:

The mechanical scroll saw is predominantly a machine for

sawing curves and precise sections. A typical application is

shown in fig. 7. The work piece must be carefully guided by

the operator. Note: Mechanical scroll saws are normally

operated without length stop, as the saw blade loses its line íf

forced in, particularly in the grain of wood.

Please note that the saw blade only saws in reverse motion in

the direction in which the teeth point.

For good results, please note the following points:

– When sawing, press the work piece onto the work plate (fig.

7), guide by feeling and with little power; more pressure on

the work plate, less pressure against the saw blade.

– Make sure that the work piece is lying properly on the saw

table (nor burrs or sawdust)

– Adapt the feed to the requirements by saw blade, speed

and work piece material.

– Guide the work piece slowly into the saw blade, particularly

if the blade is very thin and the teeth very fine or if the work

piece is very thick. Note: The teeth only cut in reverse

motion.

– Only use perfect saw blades.

– Do not let the device operate unsupervised.

– Carefully mark out/block the check line.

– Make sure there is good lighting.

– Always work with connected vacuum cleaner and carefully

set the air nozzle (7, fig. 1).

– You will achieve the best results if the wood thickness is

under 1”.

– With wood thicknesses of greater than 1”, the work piece

must be very carefully guided to stop the saw blade from

jamming, bending, twisting or breaking.

– For precise cutting, note that the saw blade will always try

to follow the direction of the fibre (applies particularly to

thin saw blades).

9.1.1 Selecting the saw blade:

As already mentioned, the correct selection of material has a

very great influence on the quality of the result. The table

below should serve as a small guide. Extensive experience

with many materials and types of saw blade is, of course,

always helpful with selection. You can experiment here.

Tip: The saw blades are mostly only particularly worn at

places where the teeth are particularly highly utilised when

sawing and, therefore, become blunt very quickly. To “use

up” the non-worn teeth and thus increase the edge life of the

sawing blades, you can artificially “raise” the bearing surface

for the work piece somewhat.

To do this, simply secure a smooth, table-sized underlay with

the required thickness to the saw table, using, for example,

double-sided sticky tape. The non-worn parts of the saw

blade are now sawing the work piece.

This is particularly sensible if you often saw very hard and

wear-intensive materials with thin blades.

The numerical data for characterising the “fineness” of the

toothing is related to the number of teeth per inch of saw

blade length:

Teeth/inches Material:

approx. 10-14 Soft and hard wood

(from approx. 3/16"-2"),

plastics, soft materials,

thicker work pieces

approx. 17-18 Fine sawing work, wood

(up to 3/16"), plastics, soft

materials, thinner work pieces

approx. 25-28 Plastic, GRP, non-ferrous

metal, Plexiglas, iron with

restriction Pertinax

approx. 41 Iron, Pertinax

Proxxon_BedienAnl_DSH_US_Bel 10.06.2005 14:20 Uhr Seite 13

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