Center finding question

[walterwoj]

BTW, the puck is 3.25 inches in dia. So at a 45 deg angle the magic number was 1.149"

 

[Ken226]

Awesome! It looks great! Excellent work. The channel looks perfect.

I had a plastic one, but it got demolished recently. I'll be making a copy of yours in the near future

My German shepherd was hangin out with me in the shop, and I guess he got bored. He swiped it and chewed in into 2lbs of plastic confetti before I noticed.

I've got a chunk of steel waiting for the right time, but since it's 7°f in the shop right now, I'm waiting for better weather.

 

[brino]

@walterwoj,

Nice job. I could use one of those.

Why the recess in the back?
Is that for function or just for weight?

Thanks,
Brian

 

[walterwoj]

@walterwoj,

Nice job. I could use one of those.

Why the recess in the back?
Is that for function or just for weight?

Thanks,
Brian

Mostly just because! All the commercial ones have a very deep recess, I suspect it's to make it cheaper ( they prolly start with a hollow cast blank, less steel) but I thought it might make it sit better on the bench if the bench isn't perfectly flat. My recess is only ~.250" deep (didn't have a target, just made it look good.) I think the commercial ones are at least .500" deep.

This is also the first use of my DRO's bolt hole function. turned out good.

 

[Ken226]

I've had this chunk prepped and waiting for better weather. 4-5/8"x1-1/8"

It's a leftover from a D1-4 spider chuck I made awhile back.



If it turns out as good as yours did, I'll be
very happy.

 

[finsruskw]

OK, I give up!!
What is it, how is it used and do I need one??
Looks like a good reason to finish the fixture plate I started a year or so back!

 

[woodchucker]

OK, I give up!!
What is it, how is it used and do I need one??
Looks like a good reason to finish the fixture plate I started a year or so back!

Its just a bench block ... you use it for punching out pins mostly. holding on to a round (a v block can too)... helping to drill straight with a hand drill.
tap straight by hand, Not necessary, less used than you think... Gun smiths may prefer a delrin version to protect the gun.
I always wanted one, then when I got one, I lost it...

 

[walterwoj]

Yea, prolly more a shelf tool than a useful tool but It fit my skill level and tool set, and now I not longer feel tempted to buy one. Win-Win! And now since I have one, you definitely need one! Remember: He who has the most tools wins! And now I'm ahead!

 

[Mtnmac]

Good job. Don’t see many people making bench blocks. Here’s mine:
It’s 4.25 dia x 2” high. 1018 steel, case hardened, surface ground top and bottom. I sandblasted it after heat treating, then put it on the surface grinder. It’s turned a nice gray color over the years from being exposed to oil. Not my design, I borrowed one from a British tool and die maker who made his during his apprenticeship in the 1950’s. I made mine just before graduating from the machine technology program at the local community college in 1985. It’s been very useful over the years.

 

[Ken226]

I've had this chunk prepped and waiting for better weather. 4-5/8"x1-1/8"

It's a leftover from a D1-4 spider chuck I made awhile back.



If it turns out as good as yours did, I'll be
very happy.

Reviving this thread after 8 months, because I finally got around to turning that chunk of steel into a bench block. Inspired by some of the creations here.

I copied the Starrett 119 bench block. It has hex flats, I guess so it can be put in a vise more easily.