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How To Cut And Polish Boulder Opal
如何切割和抛光博尔德蛋白石
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how to cut and polish boulder opalIn this guide we will show you some top tricks to cutting Australian Boulder Opal. Boulder opal is opal that has a hard backing made of Ironstone with precious opal. The precious opal can be a thin layer on top of the Ironstone or it can be intertwined within the Ironstone.

Australian boulder opal from Queensland is a fascinating stone. Cutting boulder opals is a challenge but the results are usually breathtaking because the material is so hard it is difficult to make a cutting mistake so this type of material is good for novice cutters as well as experienced cutters.

Lets get stuck into a basic overview on how to cut and polish boulder opal.

equipment to cut and polish boulder opal

Equipment you Will Need:

  • Dop sticks
  • Dop wax or strong glue
  • Trim saw with thin
  • Blade (with rim thickness approximately 0.02”)
  • Diamond grinding wheels 80, 220, 600, 1200, and 3000 grits
  • Cutting equipment
  • Rough leather
  • Polishing disk
  • Tin oxide polish
  • Lamp with 100-watt bulb
  • Safety glasses
  • Dust mask
  • Old work clothes
  • Water supply

Preparation of rough opal cutting and polishing

Preparation Of The Rough Material:

1. Hand Pick Your Opals

Pick out the days work of opals you wish to polish. It is more efficientto cut multiple stones atthe same time as you will only need toset-upthe machine once. Selecting boulder opal to work with is a skill in itself. Like working with any other rough material the more you know the better. Make sure that the ironstone around the opal is fairly strong and free from cracks. Some reasonably low-grade material is good to start with. You might not end up with a beautiful stone but you can develop your systematic skill enough that you will be capable of cutting that attractive stone in any way you want.

2. Study The Opal And Saw It Up

Look for the pattern of the ironstone to provide you some clues about the path in which the seam will run. When Opal occurs in ironstone, it has flat and straight parallel lines along the matrix. There is a better chance that the opal will track this line.If the rough is soaked in water let it dry first so you can see where the Opal is running. Check for cracks running across the stone and again look for any imperfections throughout the stone. If there are cracks running through the stone you can use the saw to split the opal down the crack. This will avoid any problems later on.

Most of the rough material you will buy has already been slabbed up so you can clearly see the Opal layer. If they material iscompletelyrough and you cannot easily see the Opal you will need to saw the stone to expose the Opal layer.

The saw blade should always be under water. Use plenty of water to keep the dust down and the Opal cool. Never cut dry as opal will heat quickly and crack.

cutting boulder opal

3. Use Coarse Cutting Wheel To Remove Material

Now is the fun part. You will need a set of old clothes because it’s going to get dirty. Now that you have a fair idea of the course in which the seam will run it is time to rub it down. Having a combination of 80 and 220 grit wheel can make rubbing down the Opal much easier. use the coarse grit wheel to remove material quickly. Try not to get too close to the line of opal. The layer of opal can be unpredictable so try and stay just above the layer.

Rub down the ironstone opal

4. Study And Familiarize Yourself With The Opal

Now it is time to familiarize the Opal. You must decide which surface is going to be the top. Base your judgement on the form and layer of the opal, the coloring, brightness, and width of the surrounding material.

Try to make sure that the material directly below the Opal is as dark as possible. This dark setting will create the colors of the opal to stand out. If there is a thin cover of dark potch between the row of Opal and the ironstone it will make the stone pop. You must try to cut the stone so that this black coating will give the backdrop for your stone.

This kind of stone is referred to as a black boulder and can be quite radiant. It is also important that the boulder opal consists of a solid base. If the ironstone on other surface of opal is too lean, it will not offer the strength that is needed for the bottom of your stone.

Familirsie yourself with the opal

5. Rub Away The Ironstone

Now that you know which way the opal will face use the 220 and 280 grit wheel. You must not come into contact with the opal once you decided to use the 220-grit wheel as it can rapidly eliminate quite a bit of the vibrant materials.

It is also advisable to use light pressure ranging from 220-grit wheel as you getting closer to the opal. You must keep on eliminating ironstone until you are just about to display opal in one part of the surface. Occasionally, before you reach the opal, you will even notice that the color of the ironstone will change.

exposed color bar in opal

6. Rub Down To Expose The Opal

Switch over to the 600-grit wheel in order to expose some opal. At this period, you are not trying to eliminate all of the ironstone from the surface. You can do it by going back and forth between the 600-grit wheel with medium pressure. Use light pressure on the 280-grit wheel. Once you establish how the layer of opal operates, you can stop working on the top.

Cutting and Polishing the Opal

Cutting And Polishing the Opal:

Polishing wheels start at 120 grit diamond than rubber wheels 400 grit / 600 grit / 1400 grit before final polish.

1. Dop The Opal

First we need to get the stone onto a dop stick. When the stone is on the dop stick it is easier to manoeuvre and shape. Use the 220-grit wheel and flatten its reverse side tone.  The two most common ways to dop an opal is with Glue or using wax.

opals on a dop stick

2. Glue

The base of the stone must clean and dry. Apply one or two drops of glue to the dop sticks. Pre-heat the opal by resting it on the border of the dop pot for not more than 30 seconds.

Use light pressure to push the opal into the dop stick. The glue will dry after about 30 minutes. opals on a dob stick ready to polish opal

3. Wax

If the reverse side of the opal is spongy and the glue does not work you may use wax as an alternative. Heat the Opal and drop melted wax onto the opal before applying it the dop sticks. You must make sure the dop sticks have a sufficient amount of melted wax on them.

2. Setup Your Watering System

This is the step where you can cut the opal. If you’re using a device that re-circulates its water such as the water that is sprayed up onto the wheels, you can dripped down into a pan, then forced from that pan and sprayed up onto the wheels once more. Change the water and make the pans dirt-free regularly.

water setup for cutting opal

3. Pre-Form - Make The Decisions

At this point you are require to make some significant decisions. Look at the general appearance of your stone, both the ironstone and opal. Their combination can be relatively beautiful.

Keep on eliminating ironstone with the 600-grit wheel. Think about keeping the stone moving. The 600-grit wheel can still reduce opal and create smooth spots and scrapes. You can do a lot of things during this stage of cutting. You are eliminating scratches from previous stages.

Then, eliminating ironstone from the surface, and building the surface and form of the stone is pleasing to the eye. Check your stone and observe what it shows you. You might require going back the 280-grit wheel and changing its form. Once you have eliminated the big scratches and are pleased with the look, go to the 1200-grit wheel.

Polishing the opal

4. FinalizeThe Shape And Expose The Opal

In this step, the 1200-grit wheel will eliminate almost all noticeable scratches. It will not do much to modify the form of your stone, but it can better its form. Use reasonable pressure and make sure the stone is continually moving.

Stop regularly and clean up your stone to verify the progress and ensure that the scratches are completely vanishing.

Once you have removed the noticeable scratches, shift to the 3000-grit wheel, or if you’re not using a 3000-grit wheel, begin to clean your stone. If your device consists of a 14,000-grit wheel, it is advisable not to cut boulder opal. This wheel begins often with scratches.

5. Final Polish

The next phase is the process of polishing. In order to make it shine, you can use tin oxide for cleaning the foam-backed rough leather pad. Just lightly soaked it with water through the use of a spray bottle and with the running device running and spinning pad.

Also, use a brush to apply a well-stirred combination of water and tin oxide onto the moist pad. From here, the water mixture as well as, the tin oxide must be thin enough so that it does not clomp, and has the uniformity of thin gravy.

lapsa polishing compound

Just keep the opals stirring by turning the dop stick between your fingers and by varying the position of the pad. Do not allow the opal to get too hot. Sometimes, the coarse leather pad can seize your stone and pull it out of your hands. This is usually because the pad has dried out or if the stone has a rough surface or even pointed edges.

Polishing boulder opal

6. A Note On Matrix Boulder opal

if you are decide to polish a matrix opal, you can pursue the same process. The opal usually polishes, but the ironstone matrix will be dry. A helpful method is to clean the opal as explained, and then permit the pad dry faintly. Use more force while you maintain the stone moving, so that you can sense the stone to get even warm.

Remember that you are cleaning the matrix, not the opal spots of your stone. Be careful while heating the stone along your polishing pad, which can develop the finish of the matrix, but be, reminded that too much heat can break the opal. This method needs a bit of practice, but the outcomes can be worth it.

7. Finish The Back Of The Stone

Lastly you can do the finishing of the back. When you are completed polishing take the stone from its dop stick. You can use light to standard pressure for roughly about 220-280 for your grit wheel in order to take out any residue of the doping matter.

You must keep the stone flat against the wheel, but turn it slightly so that scratches will be avoided on its back. At this point, select what you prefer for the specific size of the stone. When you arrived with the suitable thickness, apply the 220 or 280-grit for the wheel that can be help to minimize chipping when setting.

You can either think the opal completed, or get a more finished look by taking the back through the remaining chain of finer wheels. You must cut the back portion of stones by means of 1200 or 3000-grit wheels.

8. The Finished Product

After all of the opals have been cut and polished they can be sorted and graded.

finished opals

Boulder opals make great pendants. All that is needed is a drill press to create a hole in the tip of them. Thread through a leather strap and you have yourself a beautiful boulder Opal necklace.

marking holes for drilling

Handy tip from opal cutter

A Handy Tip From An Opal Cutter

Worried about turning your machine on and off with wet hands? Try and glue a dop stick to the power board switch. That way nothing wet ever comes in contact with electricity. Brilliant.

switch board with dop sticks

Shop For Boulder Rough

如何切割和抛光巨石蛋白石在本指南中,我们将向您展示一些切割澳大利亚巨石蛋白石的重要技巧。博尔德蛋白石是具有坚硬的铁石和珍贵蛋白石制成的蛋白石。珍贵的蛋白石可以是Ironstone顶部的薄层,也可以缠绕在Ironstone中。

来自昆士兰州的澳大利亚巨石蛋白石令人着迷。切割巨石蛋白石是一个挑战,但结果通常令人叹为观止,因为这种材料非常坚硬,很难犯下切割错误,因此这种类型的材料既适合新手切割师,也适合经验丰富的切割师。

让我们深入了解如何切割和抛光巨石蛋白石的基本概述。

切割和抛光巨石蛋白石的设备

您将需要的设备:

  • 掺杂棒
  • 掺杂蜡或强力胶
  • 修边锯
  • 刀片(轮辋厚度约为0.02英寸)
  • 金刚石砂轮80、220、600、1200和3000粒
  • 切割设备
  • 粗糙皮革
  • 抛光盘
  • 氧化锡抛光剂
  • 带100瓦灯泡的灯
  • 护目镜
  • 防尘口罩
  • 旧工作服
  • 水源

蛋白石切割和抛光的准备工作

粗料的制备:

1.手工挑选蛋白石

选择您希望抛光的蛋白石的日常工作。同时切割多块石头的效率更高,因为您只需要设置一次机器即可。选择巨石蛋白石本身就是一项技能。就像处理其他任何粗糙材料一样,您越了解越多。确保蛋白石周围的铁石相当结实且无裂纹。最好从一些低档材料开始。您可能不会最终得到一块美丽的石头,但是您可以充分地发展自己的系统技能,从而有能力以自己想要的任何方式切割那块有吸引力的石头。

2.研究蛋白石并看到它

寻找铁矿石的图案,为您提供有关接缝运行路径的一些线索。当蛋白石出现在铁矿石中时,它沿基质具有平直的平行线。蛋白石有更好的机会追踪这条线。如果将原石浸泡在水中,请先将其干燥,这样您就可以看到蛋白石的运行位置。检查石材上是否有裂纹,然后再次检查石材上是否有任何瑕疵。如果有裂缝贯穿石材,则可以使用锯将蛋白石劈开。这样可以避免以后出现任何问题。

您将要购买的大多数粗糙材料已经被压扁了,因此您可以清楚地看到蛋白石层。如果它们的材料是完全粗糙的,并且您不能轻易看到蛋白石,则需要看一下石头以露出蛋白石层。

锯片应始终在水下。使用大量的水以保持灰尘和蛋白石的凉爽。切勿干燥,因为蛋白石会迅速加热并破裂。

切割巨石蛋白石

3.使用粗切轮去除材料

现在是有趣的部分。您将需要一套旧衣服,因为它会变脏。现在,您对接缝的加工路线有了一个清晰的认识,现在是时候将其磨掉。结合使用80和220砂轮,可以更轻松地摩擦蛋白石。使用粗砂轮快速去除材料。尽量不要离蛋白石线太近。蛋白石的层可能是不可预测的,因此请尝试并停留在该层的上方。

擦去铁石蛋白石

4.学习并熟悉蛋白石

现在是时候熟悉蛋白石了。您必须确定哪个表面将成为顶部。根据蛋白石的形式和层数,周围材料的颜色,亮度和宽度进行判断。

尝试确保蛋白石正下方的材料尽可能暗。这种深色设置将使蛋白石的颜色脱颖而出。如果一排蛋白石和铁矿石之间有一层薄薄的深色锅盖,它将使石材流行。您必须尝试切割石材,以便该黑色涂层为石材提供背景。

这种石头被称为黑色巨石,并且可能非常光彩。博尔德蛋白石由坚实的基础组成也很重要。如果蛋白石其他表面上的铁石太稀薄,它将无法提供石块底部所需的强度。

Familirsie自己与蛋白石

5.擦掉铁石

现在,您已经知道使用220和280砂轮将蛋白石面对哪种方式。一旦决定使用220粗砂轮,就不要接触蛋白石,因为它可以迅速消除相当多的充满活力的材料。

当您靠近蛋白石时,建议使用220砂轮的轻压力。您必须继续清除铁石,直到您要在表面的一部分中显示蛋白石为止。有时,在到达蛋白石之前,您甚至会注意到铁矿石的颜色会改变。

蛋白石的裸色条

6.摩擦以暴露蛋白石

切换到600粗砂轮以露出一些蛋白石。在此期间,您不打算从表面清除所有铁矿石。您可以在中等压力下在600砂轮之间来回移动。在280粗砂轮上施加轻微压力。一旦确定了蛋白石层的工作方式,就可以停止在顶部工作。

切割和抛光蛋白石

切割和抛光蛋白石:

抛光轮的钻石起初为120目,而橡胶轮的最终抛光前为400目/ 600目/ 1400目。

1. Dop蛋白石

首先,我们需要将石头放在掺杂棒上。当石头放在掺杂棒上时,易于操纵和成形。使用220粗砂轮打平其背面色调。掺杂蛋白石的两种最常见方法是使用胶水或使用蜡。

蛋白棒上的蛋白石

2.胶水

石材的底部必须清洁并干燥。将一两滴胶水涂抹到兴奋剂棒上。通过将蛋白石放在掺杂罐的边缘上不超过30秒来对其进行预热。

用轻微的压力将蛋白石推入掺杂棒中。胶将在约30分钟后变干。 蛋白棒上的蛋白石准备擦亮蛋白石

3.蜡

如果蛋白石的背面是海绵状且胶水不起作用,则可以使用蜡作为替代。加热蛋白石,然后将熔化的蜡滴在蛋白石上,然后将其粘贴在棒上。您必须确保Dop棒上有足够量的熔化蜡。

2.设置浇水系统

这是您可以切割蛋白石的步骤。如果您使用的是一种循环水的设备(例如喷洒到车轮上的水),则可以滴入一个油盘中,然后从该油盘上强行喷出并再次喷到车轮上。换水并定期清洁平底锅。

切割蛋白石的水设置

3.预先表格-做出决定

在这一点上,您需要做出一些重要的决定。查看铁矿石和蛋白石的一般外观。它们的组合可以相对漂亮。

继续使用600砂轮清除铁石。考虑让石头移动。 600粒度的砂轮仍然可以减少蛋白石并产生光滑的斑点和擦伤。在切割的这个阶段,您可以做很多事情。您正在消除先前阶段的刮痕。

然后,从表面上消除铁石,并建立石头的表面和形状令人赏心悦目。检查您的石头,观察它显示的内容。您可能需要返回280粗砂轮并更改其形状。消除大的划痕并对外观感到满意之后,请转到1200砂轮。

抛光蛋白石

4.完成形状并暴露蛋白石

在此步骤中,1200砂轮将消除几乎所有明显的划痕。修改石头的形状不会有多大作用,但可以改善其形状。使用合理的压力,并确保石头不断移动。

定期停止并清理石材以核实进度,并确保划痕完全消失。

清除明显的划痕后,请转到3000粗砂轮,或者如果您不使用3000粗砂轮,请开始清洁石材。如果您的设备由14,000粒度的砂轮组成,建议不要切割卵石蛋白石。该轮子通常以划痕开始。

5.最终波兰语

下一阶段是抛光过程。为了使其光泽,可以使用氧化锡清洁泡沫支持的粗糙皮革垫。只需通过使用喷雾瓶以及运行装置的运行和旋转垫将其轻轻浸入水中即可。

另外,用刷子将水和氧化锡充分搅拌的混合物涂在湿垫上。从这里开始,水混合物以及氧化锡必须足够薄,以使其不会凝结,并具有稀肉汁的均匀性。

拉帕抛光剂

只需在手指之间转动Dop棒并改变打击垫的位置即可保持蛋白石搅拌。不要让蛋白石变得太热。有时,粗糙的皮革垫会抓住您的石头并将其从您的手中拉出。这通常是因为垫已经干了,或者如果石材的表面粗糙甚至边缘都是尖锐的。

抛光巨石蛋白石

6.关于矩阵巨石蛋白石的注释

如果您决定抛光基质蛋白石,则可以执行相同的过程。蛋白石通常会打磨,但铁矿石基质会变干。一种有用的方法是按照说明清洁蛋白石,然后使垫微弱干燥。保持石头运动的同时,用力更大,这样您就可以感觉到石头变得温暖。

请记住,您是在清洁基质,而不是清洁石头的蛋白石斑点。沿抛光垫加热石材时要小心,这会增加基质的光洁度,但要提醒您的是,过多的热量会破坏蛋白石。这种方法需要一些实践,但是结果值得。

7.完成石头的背面

最后,您可以对背面进行整理。完成抛光后,请从其掺杂棒中取出石材。对于砂轮,您可以在标准压力下使用大约220-280的光,以去除任何残留的掺杂物质。

您必须将石头平放在轮子上,但要稍微转动它,以免刮伤其背面。在这一点上,选择您想要的特定石头尺寸。当到达合适的厚度时,为砂轮涂上220或280砂砾,这有助于在设置时最大程度地减少碎裂。

您可以认为蛋白石已完成,也可以通过将剩余的较细砂轮链拉回去来获得更完整的外观。您必须使用1200或3000粒度的砂轮切割石头的后部。

8.成品

在所有蛋白石都经过切割和抛光后,可以对其进行分类和分级。

成品蛋白石

博尔德蛋白石制成精美的坠饰。所需要的只是一台钻床,以便在钻头的顶端开孔。穿过皮带,您将拥有一条美丽的巨石蛋白石项链。

打孔标记

蛋白石切割器的方便尖端

蛋白石切割机的便捷提示

是否担心用湿手打开和关闭机器?尝试将Dop棒粘在电源板开关上。这样,就不会有湿的东西与电接触。辉煌。

掺杂棒的开关板

购买巨石粗糙

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