Benchwork and Layout part 1

Summary

The video script details a step-by-step process for marking and drilling a print on a granite plate. It emphasizes the importance of precision and cleanliness, avoiding contamination with substances like daikon. The tutorial demonstrates using two types of pipe gauges for accurate measurements and setting dimensions. It also shows how to mark lines at specific heights using a digital gauge and a precision square. The process includes center punching the marked areas for drilling, ensuring the accuracy of the drill press setup. The final steps involve drilling the holes and preparing them for reaming and tapping.

Takeaways

• 🔨 The process begins with marking three drilling points on a print using daikon, ensuring not to contaminate the precision-ground granite plate.
• 📏 Two types of pipe gauges are used: one with a dial and one with a digital display, each requiring different methods to set to zero and ensure accuracy.
• 📐 The script describes setting up dimensions on the gauges for measurements of 0.5 inches, 1 inch, 1.5 inches, and 2.25 inches from the bottom and side of the block.
• 🔩 The setup involves loosening set screws, adjusting the gauges to the desired measurements, and then tightening the set screws to secure the measurements.
• ✏️ A precision square is used to support and mark thin parts, with the objective of creating a line at each marked dimension.
• 🔧 The script details the process of turning the block 90 degrees to work on the right-hand side, using a different gauge to set the dimensions.
• 🔩 The gauge settings are adjusted to match the required measurements, with a focus on the precision of the adjustments.
• 🔨 Center punching is performed to mark the exact spots for drilling, starting with a small punch and hammer, and then using a larger punch for deeper marks.
• 🔩 The center punch marks need to be precise, with adjustments made to ensure they are centered along the marked lines.
• 🛠️ The final steps involve setting up the drill press, using a center drill, and drilling the marked spots, followed by reaming and tapping the holes as required.

Q & A

What is the purpose of using daikon in the process described in the script?

Daikon is used as a marking tool to mark the spots for drilling on the print, but it is important not to get it on the granite plate as it could dirty the precision-ground surface.

Why is it important to keep the granite plate clean during the marking process?

The granite plate is precision ground flat, and any contaminants like daikon could affect its accuracy, so it's best to avoid getting it dirty.

What are the two types of pipe gauges mentioned in the script, and how are they used?

There are two types of pipe gauges mentioned: one with a dial and one with a digital display. They are used to measure and set the dimensions for drilling by adjusting to the desired depth and zeroing the gauge before marking.

How does one ensure the gauge is set to zero before marking the print?

For the digital gauge, one moves the handle until it stops, then presses two buttons to ensure it's at zero. For the dial gauge, one moves the hand wheel down until it touches the bottom and then hits the reset button to zero.

What are the three different dimensions marked on the print from the bottom?

The three dimensions marked on the print from the bottom are half an inch up, one inch up, and one and a half inches up.

How is the first dimension set on the gauge?

The first dimension is set by loosening the set screw, moving the gauge to the half-inch mark, tightening the set screw, and using fine adjustments to ensure it's exactly at 0.5 inches.

What is the purpose of using a precision square when marking a thin part?

A precision square is used to back up and support a thin part when marking to ensure accuracy and stability during the marking process.

Why is it important to scratch a line rather than cut deeply when marking the print?

Scratching a line is sufficient to mark the drilling spot without damaging the part, and it provides a guide for the drill to follow without needing to cut deeply.

How are the dimensions set for the right-hand side of the print?

The dimensions for the right-hand side are set using a different gauge with a finger lever. The gauge is adjusted to the desired depth (three-quarters of an inch, one inch, one and a half inches, and two and a quarter inches) and then locked into place before marking.

What is the purpose of center punching the marked areas?

Center punching is done to create a small indentation at the exact center of the marked spot, which helps guide the drill bit to start drilling in the correct position.

Why is it necessary to adjust the center punch position after the initial tap?

Adjusting the center punch position after the initial tap ensures that the punch mark is exactly at the center of the marked line, providing an accurate starting point for drilling.

Outlines

00:00

🔨 Setting Up for Precision Drilling

The paragraph begins with the process of preparing a print for drilling, emphasizing the importance of marking three specific areas without contaminating a precision-ground granite plate. The speaker uses daikon dye to mark the spots, being careful not to damage the granite. Two types of pipe gauges are introduced: a digital one with a hand wheel for zeroing and a dial gauge for fine adjustments. The process of setting the gauges to specific dimensions (0.5 inch, 1 inch, and 1.5 inches) is explained, including the use of a precision square for backing up thin parts. The speaker demonstrates how to mark the print with the gauges, ensuring the marks are light and precise for drilling.

05:03

📏 Measuring and Marking Dimensions

This paragraph continues the process of marking the print, focusing on the right-hand side of the block. The speaker uses a different gauge with a finger lever to set the dimensions (0.75 inch, 1 inch, 1.5 inch, and 2.25 inches). The gauge is zeroed, and the speaker demonstrates how to adjust it to the required measurements. The process of marking these dimensions onto the print is shown, with an emphasis on ensuring the marks are clear and accurate. The speaker also explains the importance of not rushing when using the digital gauge to avoid missing the correct measurement.

10:06

🔩 Center Punching the Marked Areas

The paragraph describes the next step in the process, which is center punching the marked areas to prepare for drilling. The speaker uses a small punch and hammer to create a small indentation at the center of each marked line. The importance of accuracy is stressed, with the speaker adjusting the punch's position to ensure it is centered. The process is repeated for each marked line, with the speaker zooming in to show the details of the center punching. The goal is to create a mark deep enough for the drill to catch but not so deep that it damages the material.

15:11

🛠 Final Preparations for Drilling

In this final paragraph, the speaker concludes the setup for drilling by center punching the marked areas. The focus is on the precision of the center punch to ensure that the drill will start in the correct spot. The speaker then discusses the next steps, which involve setting up the drill press to drill the center drill and the three holes, followed by reaming one hole and tapping the other two. The paragraph ends with a summary of the preparations made, including laying out the part, center punching, and the upcoming drilling process.

Keywords

💡Daikon

Daikon is a type of radish commonly used in East Asian cuisine. In the context of the video, daikon is used as a marking tool to indicate where to drill on a print. It's a practical, non-permanent method to mark the material without causing damage, as seen when the speaker mentions placing 'a little bit of daikon' in three different places.

💡Granite Plate

A granite plate is a flat, precision-ground surface often used in machining and measurement for its durability and stability. The video emphasizes the importance of keeping the granite plate clean and free from marking substances like daikon to maintain its precision. This is highlighted when the speaker advises against marking directly on the granite plate.

💡Pipe Gauges

Pipe gauges are tools used to measure the inside or outside diameter of pipes. In the video, two types of pipe gauges are mentioned: one with a dial and one with a digital display. They are used to set precise measurements for drilling, as the speaker demonstrates by adjusting the gauges to specific dimensions like half an inch, one inch, and one and a half inches.

💡Digital Readout

A digital readout is a display that shows numerical values, often used in precision measurement tools. The video describes using a digital readout to ensure the pipe gauge is set to the correct measurement before marking and drilling. The speaker mentions the importance of setting the digital readout to zero and adjusting it to the desired dimension.

💡Set Screws

Set screws are used to secure or lock parts in place. In the video, set screws are tightened to hold the pipe gauges at the correct measurement before marking the print. This ensures that the markings are accurate and consistent with the intended dimensions.

💡Center Punch

A center punch is a tool used to create a small indentation in the material, marking the exact spot for drilling or other operations. The video script describes the process of center punching the marked areas on the print to prepare them for drilling. This step is crucial for accurate drilling, as it provides a starting point for the drill bit.

💡Drill Press

A drill press is a power tool used for drilling precise holes in materials. The video mentions setting up the drill press to drill the center drill and then the three holes, indicating that it is the next step after marking and center punching the print.

💡Reaming

Reaming is the process of smoothing and enlarging a hole that has already been drilled, usually to improve its finish and accuracy. In the video, the speaker plans to ream one of the holes after drilling, suggesting a focus on precision and quality in the final product.

💡Tapping

Tapping is the process of cutting internal threads into a hole to allow the reception of a screw or bolt. The video script refers to tapping two holes, which implies that these holes will be used to secure fasteners, showcasing a step in the assembly process of the part being worked on.

💡Precision Square

A precision square is a tool used to check and ensure that surfaces are at right angles to each other. The video mentions using a precision square to back up a thin part for marking, highlighting the importance of maintaining accuracy and alignment during the marking process.

Highlights

Using daikon to mark drilling points on the print, avoiding contact with the granite plate to keep it clean.

Introduction to two separate pipe gauges, one digital and one with a hand wheel, for precision measurement.

Demonstration of how to set the digital gauge to zero and ensure accuracy with the hand wheel.

Setting the first dimension using the digital gauge to half an inch and marking it on the print.

Using a precision square to support thin parts during marking to ensure accuracy.

Marking the second dimension at one inch and adjusting the gauge accordingly.

Marking the third dimension at one and a half inches, with a focus on precision and careful measurement.

Turning the block 90 degrees to work on the right-hand side and using a different gauge for this task.

Setting the gauge to mark the dimensions of three quarters of an inch, one inch, and two and a quarter inches.

Using a hand wheel to adjust the gauge and lock it into place for accurate marking.

Center punching the marked areas with a small punch and hammer to create a starting point for drilling.

Adjusting the punch to ensure it is centered on the mark before applying more force for a deeper indentation.

Using a larger punch for a more defined center mark to guide the drill press accurately.

Setting up the drill press with a center drill to prepare for drilling the marked spots.

Drilling the three holes and reaming one hole, followed by tapping the other two holes.

Emphasizing the importance of precision and cleanliness in the drilling and marking process.

Transcripts

first thing we're going to do is going

to take

the print

and we've got three places that we're

going to need to mark for drilling so

I'll put a little bit of daikon in there

a little bit of DICOM there and a little

bit of Dyke over there now you'll notice

when I put the dye come on I didn't do

it on this granite plate because we

don't want to get anything on this

granite plate this is precision ground

flat so we don't want we're not we don't

want any daikon that kind of stuff if by

some chance you happen to get some on

here we can clean it off but it is best

if you try to avoid getting into

situations where you have to do that now

we have two separate pipe gauges that we

can use one has dial and one be a closer

look we have digital

you want to move this one with the

handler when you come down when you feel

it stop and there's a make sure it's at

zero and you can hit these two buttons

to make sure that it's there this one

there isn't a hand wheel but you just

want to move it nice and slow push down

and then once it hits the bottom you

just hit the reset button down here to

zero this will get a closer view they

see me moving the hand wheel down until

you feel the resistance touches and you

want to make sure that the zero is in

place for this one you want to slide it

up and down by hand

[Applause]

these are tight once it hits the bottom

hit the zero button right on top looking

at this print you can see that we have

three different dimensions from the

bottom so on this block half inch up one

inch up an inch and a half up and from

this side we've got three quarters of an

inch up inch and a half up and two and a

quarter inches up so to set our first

dimension I'm going to loosen this one

and I'm going to set this more in the

Senate some of us run that all the way

down and when a movement looking at my

digital move it up to the half-inch mark

I've got pretty close I'm going to

tighten this set screw first then I can

use the fine adjustment here to bring

this 0.5 0 0

I've got it in place I can lock this one

now

this actually is fairly thick and will

stand dirty by itself if you had a thin

part you needed to mark you could use a

precision square like I have here to

back it up and all we're gonna do here

is we're going to reach up a little bit

here and just drag that across send mark

a line at half inch now the next one is

at one inch so we'll do the exact same

thing I'll loosen both of these set

screws bring it up to one inch

reasonably close tighten the top one and

then I want to adjust this till it's at

one inch

tighten this lower one

and

just that across described that line and

I am putting a little bit of pressure on

there just so that I can hold it in

place all you're doing is scratching

you're not trying to to cut anything

you're not trying to leave a huge mark

and the last one is that one and a half

this way

Kira coughs we'll move it up just a

little bit by hand tighten this one up

and on this digital it's a little slow

to read so you can make a movement too

fast and you'll you'll miss your number

one point five and I won't move that

across just to mark it and we'll zoom in

on this so you can see

those lines that I have

so there you can see there you can see

the lines that I described we're gonna

be working from this right-hand side so

we're going to turn this block 90

degrees to work on to this right-hand

side we're going to use this gauge

instead now and for this one it's kind

of lock right here a little finger lever

so we'll loosen it we'll bring it up and

as you recall we had three quarters of

an inch an inch and a half of 1.5 and

2.25 so two and a quarter so we're gonna

bring this up and if you'll notice here

I'm going to go ahead and zoom in on

that a little bit so you could watch me

move it so here is down at the bottom is

a zero these are have been zeroed

what I'm going to do is move that wheel

up there's one two three four get to

five those are times 0 and this one's

easier just lock it down and to notice

that's where it has here this made five

so that's 500 and then each of this one

is a hundred thousands broken into

thousands so we want to move this up a

little bit

250,000 so then lock it into place and

now scratch across there we're gonna go

we're gonna do the three quarter one

again just to make sure so we're going

to loosen this up use the hand wheel on

this one to move it up and down

Rebeca zero

six 750,000

they're 750 so we're going to remark

these will work this take it down like 0

1 2 3 4

there is 5

well there is the correct location there

and the other one is inch and a half so

listen this move this up there is it one

inch there one two four five lock that

in place

scratch across there and then that part

is done

now what we're going to do here is we're

going to Center punch those areas we're

going to start with a small punch hammer

here we're just going to lightly tap it

to get it in place so you've got your

hammer and your punch let me zoom in

here so you can see what I'm trying to

do so what I'm going to do set the side

so you can see it so what I want to do

is find the center of that mark so I'm

going to look

and I try to move the top to the side

so if I can see where that point hits

along that line along that line and then

when I got where I want it I think it is

I'm just kind of lightly tap it first

take a look at it see if that looks like

it's on the center pointing up that got

a little mark there I can send her back

in and hit it a little bit harder and

just see if I can get even closer so you

can see this see how it's a little bit

off it's not exactly in the center I

need to move that just a little bit to

one side so I'm gonna just a little bit

at this point you can usually move it to

the right spot and let's get this where

you can see it a little bit better

like you

let's camp

so you can get it from my perspective

being on center

that

warp and once I've got my mark where I

need it I'll get it

couple of harder taps

and we'll take a larger punch and I've

got on the handle so it's got a good

solid back and now we have that the

center that looks to me like I still

need to move a little bit that direction

so I still can

[Applause]

and then if you look at it

instead of looking at it at an angle

yeah that's looking pretty square in the

center now we're gonna do the same thing

with these other two back out a little

bit so you can see me do it

take

tiny perch

[Music]

[Applause]

[Music]

[Applause]

okay you'll notice I wasn't trying to

hammer a nail through there I was just

marking that spot but I wanted to deep

enough that my senator drill will catch

on to that and drill in the right spot

so at this point we have laid out our

part we Center punched it so now we're

going to go to the drill press we're

going to set up and drill our center

drill and then drill our three holes and

then ream one hole and we'll tap the

other the other two