Questions tagged [tools]

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2
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0answers
32 views

Did I buy the wrong SBR rails? They don't seem to attach or align

I have bought some SBR12 rails and bearing blocks in an attempt to make a fancy flatenning jig for my router. I haven't been able to see 100% everything that other people have done on the YouTubes due ...
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2answers
61 views

I would like to cut out arcs of the circumference of a cross section of PVC pipe so the arcs are precisely 60 degrees. How would I do this?

I need to make a single piece (therefore automation not necessary). The PVC pipe in question is approximately 490mm long and has a 20mm diameter. I would like to cut four 60° arcs, the location of the ...
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0answers
42 views

Proper bits for light cuts in deep slots?

I have an application where I want to do some milling at the bottom of a pocket. I need a 1/4" diameter cutter that can reach >3/4" into a 1/4" slot, but I don't need more than about ...
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1answer
42 views

How to extract a broken 6.5mm plug from jack?

One of my 6.5mm adapter was broken and the heading pieces was kept in the jack. (picture atatched) What tool should I use to extract the broken part?
3
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2answers
684 views

Unit of “cN.m” used on torque wrench

I'm using a torque wrench whose unit is cN.m. I wonder what unit this is, and how to convert N.m (Newton meter) to ...
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2answers
107 views

Punch Hole Exactly in Center of Acrylic

I am designing my own optical rotary encoder with a non-standard number of encoder positions for a specialty application. I have gotten a 0.35mm acrylic with the pattern printed on it but now I need ...
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0answers
33 views

Are decimal inch drills a thing?

A cursory search indicates that drills size in round decimals of an inch (e.g. 0.3, 0.4, 0.15 inch) are not common, but are they a production item or would they only be available as some sort of ...
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0answers
27 views

crude spoke tension gauge

Standard bicycle spoke tensiometers are too large for use with small wheels, the kind used on recumbent bikes and folding bikes. Could a small adjustable or beam-style torque wrench be used to gauge ...
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0answers
29 views

Proper storage of micrometer-adjustable torque wrenches

Sturtevant's website has the following warning: Relieving the tension down to the lowest setting on some micrometer adjustable torque wrenches can cause the tool to go out of tolerance and you won't ...
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2answers
49 views

If production line is for production, what is the name of the line for decomposition?

A production line is a sequence of processes and operations applied to a workpiece to create a product. Now consider another line that tries to decompose a given product, and extract raw materials ...
2
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1answer
65 views

How to make holes in granite without electrical or iron tools?

I see granite blocks in ancient Egyptian temples with perfect holes drilled into them. The historians say at that time (2500BC) they did not possess iron tools or the wheel and certainly no ...
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1answer
53 views

What is the correct method to remove or tighten this splined “nut”?

This photo shows the input shaft of an air compressor head. The splined cog-looking disc around the shaft is actually a sort of threaded nut which screws into the larger disc around it. It serves to ...
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2answers
39 views

What is the name of this thing? (hex key reduction?)

What is the name of this thing? I am trying to find it by keywords like "hex hey reduction" etc. but so far no results. My problem is that the plastic socket is easily damaged and I want to ...
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1answer
24 views

Glass/Tile drill bits

I meant to get a countersink for wood. Then in the hardware store, beside the countersinks, I saw a glass/tile drill bit set, which as a pack, is not so much more expensive than a single countersink. ...
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1answer
31 views

Is it possible to connect a car air compressor to a blow out gun?

I have a compressor with this type of outlet: I am not sure how it is called, but it works for my bicycle and car. Then I have a blow out gun to clean electronics by a stream of compressed air. The ...
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0answers
227 views

Estimation of cutting torque for circular saw device

How could I estimate the required torque for cutting through wood using a blade, say 180 mm in diameter? I am not too sure how to approach this.
1
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1answer
74 views

How do engineers work with extremely small objects?

Please excuse me if my question is not well-worded. My background is pure mathematics and I am not familiar with engineering, but sometimes I feel fascinated by the things engineers have achieved. ...
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0answers
37 views

Adjustable screw positioning

I'm looking for the name of part which I'm pretty sure exists. It works similar to how the seat on a exercise weight machine works. It's a plastic band which has a bunch of connected figure 8s cut ...
2
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1answer
43 views

Trying to find this exact type of T Ruler? [closed]

I am trying to find the exact tool which i assume is a modified t ruler to purchase but i cannot see any exactly like it. Any help would be appreciated: Picture attached: It is adjustable and has a ...
0
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1answer
26 views

what design features allow a milling machine to withstand lateral pressures against the bit

I need to cut a slot 4mm wide by 25mm long in aluminum tube with a 2.2mm wall thickness and a 35mm O.D. The tube is 250mm in length. It seemed a drill press with a fluting bit might suffice for this ...
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0answers
31 views

What are design features of impact type screwdriver bits?

Modern screwdriver bits, marketed for impact tool use, have "torsion" control, apparently implemented with a necking of the bit. Does this feature reduce the delivered peak torque? Practically, ...
2
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1answer
45 views

Why is the fluted edge of a twist drill bit sharp?

My intuition on how a twist drill bit operates is that the cutting is done by the end of the drill bit and that the fluted section carries away material as it's cut. When I look at twist drill bits, ...
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1answer
21 views

Swiss File #4 Alternatives

I want to buy a "Swiss File #4". I visited some local stores but noone knew what that was. I found this nice set of files. Can someone read what it says in the top? Is some of these file equivalent ...
2
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2answers
160 views

Should lithium batteries be recharged after every use , or when they are exhausted?

For a small unit like a drill: Is it better to charge after any use or wait until the lithium battery is exhausted ?
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1answer
289 views

How do you determine the apt cutting speed of a hot wire foam cutter?

I am designing an automated hot wire foam cutter for my project, and I am stuck on the computation for the most viable cutting speed of my design. The cutting tool used is a nichrome wire and the ...
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2answers
72 views

Terminology for drill component?

I built/assembled a small drill press recently and used a part from a Junk Drill because I couldn't figure out what a particular component I needed was called. What I was looking for was a way to ...
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4answers
106 views

Git, Mercurial, others — what's the best system for an engineering team new to version control?

I recently started working with a new team doing detailed energy modeling for all flavors of building projects -- commercial, industrial, residential, new construction, renovations, additions. As the ...
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2answers
41 views

Why are angle grinder discs consumable?

I learned in high school science that everything has a hardness index, that metal has a relatively low hardness compared to many kinds of stones, and that something cannot be scratched by a substance ...
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0answers
22 views

What constitutes AGILITY where Behavior-Driven and Unit Testing are concerned [closed]

This morning I had a presentation on PHPSPec which the official website describes as follows: A php toolset to drive emergent design by specification. As defined within an adjective context the ...
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1answer
61 views

Lubricant fluid and Rubber compatibility

I have a portable band saw, which I plan to add lubricant fluid to (this is getting ahead of myself, as I haven't even constructed a portable band saw stand). The main problem with this and the reason ...
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2answers
86 views

Cutting tool for hollow tubes [closed]

We have steel hollow tubes of 80 mm length and 0.5 mm cross section, that we need to cut in smaller pieces of 10.1 and 10.5 mm length. We have been using utility knifes with very poor results. I am ...
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3answers
88 views

Heating up Tool Steel with a welder

I'm a newbie of electricity and I would like to know if a piece of tool steel connected to both positive and ground pole of a welder tend to heat up red hot. If yes, at wich amperage? There are some ...
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1answer
57 views

Potentially fatal near miss: Due diligence in tool selection

I recently outfitted a crew to build scaffold in preparation for an upcoming turnaround at our plant. Among the tools requested were canvas buckets for manually hauling material and tools up and down ...
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1answer
52 views

What are the electronic readout versions of Dial Indicators called?

These items: https://www.parktool.com/product/dial-indicator-gauge-set-for-ts-2-2-and-ts-2-truing-stands-ts-2di are mechanical gauges with roller tips that are intended to measure deviations from true ...
3
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3answers
111 views

Making precise, intricate measurements

What's the best way to precisely measure intricate mechanical parts? For example, notice the tiny differences between the pitch in these two threads, and the tiny variations in external width of the ...
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2answers
106 views

Where is the contact point between screw spindle teeth and nut teeth?

So this is a screw press used to hmm disconnect the clamp connection (sorry if these are not the correct terms I really don't know how to translate it properly). Anyway, I think it's obvious what this ...
1
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1answer
40 views

Are “Imperial Eastman” compression connections sized the same as regular imperial connections?

I have some high pressure and vacuum lines off of a tool from the 1980s and they are labeled as, for example, "3/8 imperial - eastman," which seems to be different from how normal compression ...
2
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2answers
8k views

Do micrometer calipers have any advantage over vernier calipers?

Micrometer calipers measure thickness. Vernier calipers can measure both thickness and inside diameter. For the same least count and accuracy, both are similarly priced. Do micrometers have any ...
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2answers
1k views

Difference between an angle grinder and an abrasive saw

It seems to me that abrasive saw is a term mainly used in the US (the Wikipedia article on it has no links to pages in any other languages), whereas angle grinder has some 20+ translations. So, can ...
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2answers
2k views

Can we build a tool that measure curvature on an arc?

I know some biologist that are taking curvature measurements on photos with softwares to understand the variation on beak morphology. I'm wondering if there is a way to build a mechanical tool (or ...
2
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2answers
3k views

How to regulate a vacuum pump?

I need a vacuum pump to provide at least 21" Hg of vacuum. Looking at the cheap rotary pumps on ebay, this one seems to be way more than fit for the job. Is there a way though I can regulate it ...
4
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1answer
137 views

3D Representation of Magnetic Field Lines

There are several tools available for monitoring electrical metrics (voltage, current, resistance, frequency). I have recently acquired all that I need for these studies. What tools are available for ...
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2answers
2k views

What prevents using a toothed blade with a cutoff saw designed for abrasive discs?

I have an abrasive cutoff saw that I use to cut metal, it runs at 3800RPM. You cannot cut aluminum with these saws, so I bought a carbide blade rated for 3800RPM. I went to install it, but after ...
3
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1answer
398 views

How to read micrometer?

I am just posting here to verify that I am properly using a tool that is new to me, a micrometer. Here is what the precision label specifies, basically that it can measure up to an inch and down to 1/...
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2answers
2k views

What is the advantage of using a four-sided crimper vs. pliers?

I'm trying to crimp some pins onto 20 AWG wire. I can either use a tool like this: Or I can just use pliers, which are obviously cheaper and more readily available. Why should I use the more ...