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Carburetor Problem

10/10/2012 12:19 AM

carburetor promblems,.. i need to drill or melt a 1/4" hole though 1/4" thick blown glass . some of my friend suggested a diamond coated drill bit. i've never used one.

my iron goes to 850 degrees.. is that enough heat to melt thwe glass? does anyone have a have a better idea?

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#1

Re: carburetor problem

10/10/2012 12:22 AM

Just roll a joint.

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#6
In reply to #1

Re: carburetor problem

10/10/2012 11:09 AM

Took me a few minutes to get it but I laughed out loud when I did

Too funny!

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#7
In reply to #6

Re: carburetor problem

10/10/2012 11:13 AM

What else could it be??????? Bongs are the only thing made from blown glass that have a "carburator" hole in them. (So I've been told by my friends kids.)

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#10
In reply to #7

Re: carburetor problem

10/10/2012 9:40 PM

you old dog

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#2

Re: carburetor problem

10/10/2012 12:24 AM

There are pointed carbide bits that are supposed to work for drilling glass; I don't know what if any lubricant is used, nor how much chance there is of shattering the glass. It might help to flame polish the edges afterward.

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#3

Re: carburetor problem

10/10/2012 1:21 AM

How valuable is the glass, or the remainder of the carburetor? Is there no other way other than drilling through the glass? I believe that using a carbide grinding burr, while flooding with water will yield a nicly formed hole.

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#9
In reply to #3

Re: carburetor problem

10/10/2012 6:10 PM

it's in nice shape but it it did'nt come with a carburator. i can't drive it the way it is.

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#4

Re: carburetor problem

10/10/2012 2:09 AM

I have drilled and cut glass many times and I prefer to use my Dremmel and a diamond burr or bit sharpening tool. Its really easy to cut precision holes and other shapes glass or ceramics with those.

As mentioned earlier just use a bit of water to keep the glass dust and heat down and you wont have any problems.

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#5

Re: Carburetor Problem

10/10/2012 11:03 AM

I'll bite...how is this a carburetor problem? Blown glass?

Is this a custom sight glass or bowl?

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#8
In reply to #5

Re: Carburetor Problem

10/10/2012 4:18 PM

ahh... yes. yes it is.

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#11

Re: Carburetor Problem

10/10/2012 10:59 PM

This mob is in your neck of the woods;

www.theoempartsstore.com formerly known as Stens. They are very cheap when compared to Stens' Australia prices. US$12 vs A$58 for the same part.

They may have an original fuel filter/carburettor bowl for your engine. Otherwise REID SUPPLY Co. will have tungsten carbide glass drills.

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#13
In reply to #11

Re: Carburetor Problem

10/10/2012 11:34 PM

i need a slider.

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#14
In reply to #13

Re: Carburetor Problem

10/10/2012 11:44 PM

que?

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#15
In reply to #14

Re: Carburetor Problem

10/11/2012 12:09 AM

O.K. just googled slide and found an interesting discussion about slide vs carb.

Nothing like the slide carby i knew, they mixed petrol and air. The Australian Aboriginal children sniff petrol from a can of fuel hung around their neck. Does serious damage to their brains and the parents don't care. Maybe they would be interested in your glass bowl slider carby? I doubt that the Authorities would take too kindly to anyone supplying said devices.

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#16
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Re: Carburetor Problem

10/11/2012 12:12 AM

Would sniffing be any safer if it was unleaded, or E-85?

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#21
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Re: Carburetor Problem

10/11/2012 8:28 AM

Our government came up with the simple solution of giving the parents only diesel powered cars which resulted in fuel theft from mining companies increasing. The taxpayer also funded satellite 'phone bases so that the flying doctor could be called for the children. The kids always had to have several family members go with them to the hospital, and strangely, they only got sick on pension days. We live in interesting times.

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#12

Re: Carburetor Problem

10/10/2012 11:33 PM

There are several ways to do this. I suggest you Google "diamond core drills" and purchase one. You should use it in a drill press and turn it at a few hundred RPM (not critical) and use some water to wash the cut material away. Begin with low pressure to get the cut started because the drill is not self centering. You can increase the pressure once the cut has started, but when you reach the end of the cut, back off on the pressure or the glass will chip badly as the drill exits. A good method of eliminating the exit chipping is to attach another sheet of glass to the exit side of the piece you are drilling using low temperature melting wax. You can warm the wax joint and remove the back-up glass after the drill has penetrated into it. Using this method, you should be able to drill through 1/4" in less than a minute.

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#17

Re: Carburetor Problem

10/11/2012 12:15 AM

An old-fashioned way to do this involves using loose carborundum grit in water as an abrasive slurry, kept in place by a temporary dam made of modeling clay, while drilling with a piece of brass tubing. Use a drill press, supporting your blown glass with more modeling clay for stability. Work at slow speed & light pressure, making contact for a few seconds at a time, then lift to permit more slurry to get under the edge of the tubing, and repeat. Earlier comments about care at time of breaking through still apply. If you have valve grinding compound, it should work for the abrasive.

If you can rig a support to the INSIDE of the glass, say, on a wooden cantilever with a blob of clay, this may help in supporting the work at breakthrough time.

Even if your soldering iron would provide a high enough temperature, and sufficient heating power, thermal stress would then break the glass: DON'T!

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#23
In reply to #17

Re: Carburetor Problem

10/11/2012 4:42 PM

Absolutely correct Ron. Copper or brass tubing works well, though aluminum can be used too but with less desirable results. Patience is required since excessive force will break the glass before it is cleanly cut for the last .5MM or so. The more coarse the abrasive the faster it works. Carborundum lapping compound 100grit or lower was a low cost and effective medium, though I am told a coarse diamond compund is better. But that's got to cost a bundle in the amount you may need and waste in the process. Adding speed to the rotation of the tubing will NOT increase cutting speed, but will fling the abrasive away from the point of cut. Slow and steady wins. You might want to practice on an old bottle or other disposable glass object prior to you actual project piece. Good luck.

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#18

Re: Carburetor Problem

10/11/2012 12:53 AM

Try these 5mm to 128mm diameter

http://www.c-cuttools.com.au/productsinfo.php

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#19

Re: Carburetor Problem

10/11/2012 5:05 AM

I have drilled glass with a triangular small file the first 15/20mm is put on a grinder [fine wheel] on all three sides to sharpen this is then fitted to a hand drill then I make a dam around the site and fill it with parafin some places call it kerasil? and then drill slowly this is a old way of doing this with tools most would have.

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#20

Re: Carburetor Problem

10/11/2012 7:20 AM

just FYI it will take closer to 1200 degrees centigrade to melt the glass, the diamond bit is what we used for drilling 1/2" holes for production in manufacturing CRT's, water cooled as mentioned.

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#22

Re: Carburetor Problem

10/11/2012 9:21 AM

A 1/4-inch diameter Bong carb?

That must be one impressively large Bong!!!!

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#24

Re: Carburetor Problem

10/25/2012 12:59 AM

I do not know specifically how to solve this problem, but I share a link here. Hope it to be able to help you.

http://www.jackssmallengines.com/carbprob.cfm

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#25

Re: Carburetor Problem

10/25/2012 3:34 AM

Just ran across a mention of this in the local newspaper; looks like it could be a VERY useful source of both information and a specialized tool for this job. See http://www.drillglass.com/bifordrto.html?gclid=CMbJnNvSm7MCFdEWMgodp08Awg. If you Google Dremel "glass drill" (everything that's shown in boldface) you will find links to a video demonstrating this method.

Let us know how this turns out!

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