Shop Made Tools, Line Boring Bar, Broaching Square Holes, Manual Machine Shop

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Sometimes you just don't have the tool for the job. What then? You could order it from a supplier, or do like I do, make your own.
The job at hand is to line bore the front casting of a Case tractor, but the line boring bar is too small for the job. Watch as I build my own to get the job done. Learn how to put a square peg in a round hole with a push broach.
Stay tuned for the actual line boring job. It is going to be a good one.
Topper Machine LLC is an entirely manual machine shop located in Spooner, WI. Our videos will highlight some of our shop work as well as the sawmill we built in the shop and our A.D. Baker steam engine, and others we work on.
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Опубликовано:

24 мар 2022

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Комментарии : 46

@billdoodson4232 Год назад

I was always taught to drill a pilot hole first, that was over 50 years ago. I still do, for a drill that size I'd go through with a 4 or 5mm drill first.

@MattysWorkshop 2 года назад

Gday Josh, I can completely understand why you were nervous broaching them holes, I’ve seen the price of the broaches and it’s not a small figure, definitely a job you don’t rush, great job mate, Cheers

@dermotkelly2971 2 года назад

Hello Josh. Another new addition to the shop. Takes time to build stuff up and no doubt you will have to make many more things for different jobs but you can just save them and then things will become easier for you in the future. I don't need to tell you this lol! Great job.

@TopperMachineLLC 2 года назад

After 10 years, I have so much tooling. Some bought, some made,but it seems you always are needing something else. I guess that's why I try to plan ahead for different jobs when designing my tools.

@mrwaterschoot5617 2 года назад

@@TopperMachineLLC you do what you need to get the job done. usually you like to do it the first time and you.are done if you happen to do something wrong. it can become scrap or possible rework. and with manual vs cnc. i think cnc is any machining with a computer chip and programming. your lion engine lathe has powered feeds manual.or mechanical. one.thing that i do not know. if it has a computer chip in the.motor configuration. if it was.built in it could explain whybthe iraqi could not get the correct centrifugal speed to separate.the nuclear matter for weapons of mass destruction. only my guess but otherwise it should not been a big deal to dial in a certain centrifigal.speed.

@GardenTractorBoy 2 года назад

It is great to be able to make a tool. I really liked the broaching, that is something I would like to try

@TopperMachineLLC 2 года назад

Just be careful and take your time if you do.

@Freetheworldnow 2 года назад

Well done on the broaching. But please level your Dake press. It is dancing like it was mardi gras! I personally would use a method to properly align the bar to the broach on the horizontal plane so you get your square straight. You seem to do it by eye balling the broach to the bar. Looking forward to the actual boring job. I like these videos a lot. Thanks for sharing. God Bless.

@TopperMachineLLC 2 года назад

I hardly use it anymore. Had no idea it was that bad. Camera made it look way worse than I was seeing. But yes, I need to fix that.

@dinosauralan.9486 Год назад

To save moving the bar, clamp the bar to the bed?? Forget the vice??

@wilsonhardy2100 2 года назад

Wow, that is a lot of hard drilling and broaching. Glad nothing went snap.

@VetSemperFi 2 года назад

Wow... I learned that a square peg does fit into a round hole!

@TopperMachineLLC 2 года назад

With enough force, it'll fit. Same way the USPS priority mail boxes work.

@johnlee8231 2 года назад

Looks like someones been holding back some content. Still enjoy watching the old monarch at work.

@TopperMachineLLC 2 года назад

I shot a bunch of stuff a while before I got the Lion in. Been hectic here and haven't been able to shoot much. New camera arrived yesterday so after the next 2 videos we start fresh with hopefully better footage.

@edsmachine93 2 года назад

Looks great Josh. Just like factory! That will work great. I have used D2 in the past for some of the boring bars I have made. Great idea using the pre-hard. Great content. That boring bar would be very expensive if you had to buy it. Thank you, EM.

@jimbrideau5802 2 года назад

I've been watching your videos for awhile now. You're doing a great job, love your content. Keep up the good work.

@jonkzak 2 года назад

Josh I thought fer sure that broach was destined to be half watching the flex. Great yard find that press. Thanks for sharing and keep up with the great work.

@markwatters6875 2 года назад

Great job mate. Have a good one 👍🇦🇺

@swanvalleymachineshop 2 года назад

My first one , i had to use the '' armstrong method '' with the Bridgeport quill , it took for ever to complete ! 👍

@kentuckytrapper780 2 года назад

I picked up eight square brochures at a flea market for one dollar each the guy said they were square wood files..lol. my lucky day..MSC sales a round press in for boaring bars really easy to install. Great video Josh, keep'um coming..

@TopperMachineLLC 2 года назад

I'll give you $2 each plus shipping. Great score. I looked at those inserts, just haven't tried them yet.

@dannygreene4594 2 года назад

Very nice job, it would be nice to see the boring bar in action

@TopperMachineLLC 2 года назад

Stay tuned. Next two Fridays are line boring videos.

@bostedtap8399 2 года назад

Great job Josh, spot on, Ref checking alignment on broaching, I notice that a pad has been welded on the Dake press. Thanks for sharing

@TopperMachineLLC 2 года назад

That pad was there when I got it. Definitely a good upgrade. No wear on the arbor that way.

@homemadetools 2 года назад

Good work. We shared this video on our homemade tools forum this week 😎

@TopperMachineLLC 2 года назад

Thank you very much. I'm sure I will have more tooling builds coming up.

@homemadetools 2 года назад

@@TopperMachineLLC I'm sure you will too. Let me know if you want a free forum membership (usually $39/year), and you can post your videos on our forum whenever you want and get more subscribers. We have lots of YTers on board; looks like you're one of us.

@deankay4434 2 года назад

Josh, Is that one of those $167 Harbor Freight arbor presses you found in a yard sale? I bet is was next to the $699 1967 GTO with the big block was it? Because damn, I was going to go there but couldn’t find my keys. Then the keys were in my jacket but lunchtime changed my mind. I missed out. Luck dude! (LOL) Thanks for the amazing stressful video that was so under the gun, my blood pressure went up just watching! Thanks so much. Very, very nice set up in your shop! Wow! DK, ASE master tech since 78, retired.

@TopperMachineLLC 2 года назад

Lol. The guy had no idea what he had. When I said I'd take it and he started loading it, he threw in a 6" Skinner milling vise and an Owatana 6" bearing separator. That day was a super score. And I was stressed doing the broaching. Lol. Thanks for watching.

@bcbloc02 2 года назад

HBM makes this an easy job. It was always a pain for me to do on my big horizontal mill.

@TopperMachineLLC 2 года назад

I just saw your video on boring these last week. Wish I had seen it before doing the job. If you have some free time next week, give me a call. Would love to chat. Number is on the website.

@daleolson3506 2 года назад

I would bore the worn housing,then make new bushings to fit. The original bushing looks too thin to work with another bushing.

@shaunybonny688 2 года назад

That kind of bar stock doesn’t need to be straightened before using it?

@jackdawg4579 2 года назад

is there a trick to lining the broach up so the hole you make is square with the bar?

@TopperMachineLLC 2 года назад

You can use a square to line it up, but I just eyeballed it. Actually came out really close and if it's off at all the grind on the tool would compensate.

@davidrichards5594 2 года назад

Hi Josh, Well done video. I've made some bars for my HBM also. But I just used round HHS or modified brazed carbide bits. The square broach does a nice job of it, I may have to invest in one. Do you think the harder version of 4140 is more rigid and worth the trouble? One thing I caught on to is drilling the holes slightly off center on the bar to make the top of the cutting tool "on center" in the cut, seemed to cut down on chatter and make a better finish.....Dave

@TopperMachineLLC 2 года назад

Hi Dave. I would use the 4140 PreHard if you can. I've tried 1018 & 1045, but they aren't stiff enough. I drilled these on center, but grind my HSS to accommodate. By being on center, I can easily run in either direction on rotation.

@ellieprice363 2 года назад

New subscriber here. Thanks for another interesting video but I’m a little confused. I thought I’d read in some engineering manual that all steels, regardless of alloy, were the same stiffness, and to get more stiffness you have to go to carbide. If that’s true the same diameter in 1045 should be the same stiffness as annealed 4140.

@hmw-ms3tx 2 года назад

Hello Josh, I just made a bar very similar to yours about a month ago. It was 1" diameter and I broached 5/16" square holes in it. I bought some 5/16" M42 HSS blanks from McMaster-Carr and I found out they were ground about .0015" larger than 5/16" and won't fit my broached holes. I had to dig through my old box of HSS to find some blanks that were ground just under 5/16". I was wondering if you ran into this problem with your bar? Ken

@TopperMachineLLC 2 года назад

Yes Ken! Yes I did. Was none to happy about it either. I just hit my HSS on the belt grinder and took a little off.

@mabmachine 2 года назад

Never had the chance to do line boring yet. Maybe someday. What was the Case tractor?

@thebotformalityknownasdale2564 2 года назад

I re Aly hope you reply to this ? Why would you tap such a large hole for a set screw first I'm not a machinist and I don't even play one on RU-vid but in my mind for LINE boring would you not weeken it at a point that's got a big hole allready. Oh ye0a thanx for the time you take for video only to have guys like me question your work .

@TopperMachineLLC 2 года назад

Hi Dale, first off, don't feel bad questioning my work. It's a good way for everyone to learn. In this material, it really won't weaken it any. 4140 PreHard is very strong, and you don't take huge cuts when line boring. The reason for the 3/8-24 set screw was more for the fact I have a huge surplus of them. Smaller would work, but these were readily available. And when you live in a desolate area like I do, it's hard to get things quickly.