Re: Broaching guides
The depth I can calculate but I don't know how much clearance I should use for the width of the slot.
By
paul mcclintic
·
#118940
·
|
Re: Broaching guides
You can speed up the process by fitting a scrap plug in the bore & drilling a slightly smaller than desired key size hole, centered at the plug/bore intersection. Despite having a pretty comprehensive
By
Roy
·
#118939
·
|
Re: Broaching guides
Here is a YouTube of using a lathe to make an internal keyway. https://www.youtube.com/watch?v=8FafBDB0fUk You just use the carriage as the "reciprocating ram" that would be on a shaper. I've never
By
Charles Kinzer
·
#118938
·
|
Re: Broaching guides
Someone explained that you can easily do it on the minilathe by using it as a shaper. So why go on about buying gadgets (let alone gadgets that cost $160!) We all have minilathes, so I suggest you
By
Miket_NYC
·
#118937
·
|
Re: Mexican users of 7x12 lathe
When I cutting cast iron I use lathe and cut outside. The photo is casting in class 45? cast iron. It is a harder cast iron than most. FYI The first photo is finished part. The second photo same
By
davesmith1800
·
#118936
·
|
Re: Broaching guides
I have made about three of these guides and they worked. So I believe that makes me a psuedo-beginner-expert by you-tube standards. :) The slot for the broach needs to be cut such that the portion
By
@ThomasKeefe
·
#118935
·
|
Re: Mexican users of 7x12 lathe
Yes, an angle grinder is a great idea. (I think I've actually done it that way before, but I forgot to mention it!) There are two real problems with using barbell plates. The skin is the worst one.
By
Miket_NYC
·
#118934
·
|
Re: Broaching guides
The set you show is $160 and does not include a 4mm broach. I bought the 3mm and 4mm broaches for $30. I need to make the one guide since there is no 28mm guide for a 4mm broach. I have the guide
By
paul mcclintic
·
#118933
·
|
Re: Mexican users of 7x12 lathe
Here you go Johannes. https://listado.mercadolibre.com.mx/torno-para-metales#D[A:torno%20para%20metales]
By
mario mohl
·
#118932
·
|
Re: Mexican users of 7x12 lathe
Thanks Mario and the rest of your boys. I found in map this Lapaloma Metal not so far away from me. Let see they sell seizes shorter than 3 meters. Brass and aluminum is for the moment most
By
Johannes
·
#118931
·
|
Re: Broaching guides
there's several of these on youtube https://www.youtube.com/watch?v=BmOyQsH-EUk animal
By
mike allen
·
#118930
·
|
Re: Broaching guides
Here lower cost set in metric.
By
davesmith1800
·
#118929
·
|
Re: Broaching guides
I am putting a 4mm keyway in a 28mm bore. I do not think buying one is an option.
By
paul mcclintic
·
#118928
·
|
Re: Mexican users of 7x12 lathe
When I use barbell weights, I clamp one to a sawhorse (outside) & use an angle grinder to remove the skin before putting it on the lathe. Roy
By
Roy
·
#118927
·
|
Re: Broaching guides
Hello, Paul! There is an easy method of cutting internal keyways that does not require a broach. Have you considered using your lathe as an internal shaper? All it requires is a boring bar smaller
By
OldToolmaker
·
#118926
·
|
Re: Mexican users of 7x12 lathe
"If you don't mind mediocre material, exercise weight plates can give some cast iron slugs." You can get a lot of good metal from people throwing out barbell equipment (usually after the person in the
By
Miket_NYC
·
#118925
·
|
Re: Mexican users of 7x12 lathe
Mexico, San Miguel de Allende, so nowhere close. Look for "Metales la Paloma" for alum & brass. They do have minimums but not outrageous. https://www.lapaloma.com.mx/lapaloma_metales/index.html
By
mario mohl
·
#118924
·
|
Re: Mexican users of 7x12 lathe
Back 1960's there a magazine where guy made his own bar stock for plumbing parts It was a basic mold out of earth about 8" long I think. He had good brass bar stock to use. Dave
By
davesmith1800
·
#118923
·
|
Re: Mexican users of 7x12 lathe
Doesn't hurt to bring donuts or lunch or something along with the ask.
By
chrisser
·
#118922
·
|
Re: Mexican users of 7x12 lathe
When you are in some town that has a machine shop, or two, or more, consider just going in and asking if they have some small scraps they might give you.? Or maybe even say you can pay.? (If paying,
By
Charles Kinzer
·
#118921
·
|