autocast universal
®
230 Casting System Model casting Stand 1.9. 03 A 23
7. Spruing system
In the upper jaw, attach 2 sprue channels of 4 mm diameter
in the form of a v in the dorsal region. Length of the sprue
channels are approx. 10 mm.
The standard spruing system is used in the lower jaw.
(see page A 11)
8. Preparation for investing
The models are trimmed on the side to the waxed portions.
The subsequent standing surface of the model is trimmed at
an angle of 45°. Distance from the waxed model to the base
surface approx. 4 mm. In contrast to conventional titanium
model casting, the upper jaw one-piece casting models are
waxed onto the base plate at an angle of 45°.
Lower jaw refractory models are waxed as usual.
9. Muffle ring
The blue muffle ring for all upper jaw models.
The red or blue muffle ring for all lower jaw models.
With models waxed-up at an angle of 45°, the undercut
areas on the investment model are filled with rematitan
®
Plus investment using a large brush before mounting the
muffle ring. This prevents from bubbles on the wax model.
Setting time 40 minutes. Peel off the muffle base.
10. Investing
For the upper jaw (blue muffle), 3 x 250 g packs are required.
Mixing ratio = 750 g : 120 ml.
11. Standing times, holding times,
temperatures
The parameters for the rematitan
®
casting system instructions
apply (page A 4 and A 20–21).
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