Blanchard grind quote

[mkd]

Im quoting a job.
thinking to blanchard 6 x 16 inch 4340 plates HT'd to 38 Rc.

one side needs to be flat .005 and we only have about .050 room to cleanup 100%


10x 100 piece batches

opinions on what should it cost?

[jlw™]

 

Just kidding, I'm going to follow because I'm curious myself.

[mkd]

i was expecting a $10 ea quote. (based solely on a wild a$$ guess)

it came in waaaaaay more.

 

really great Blanchard guy I've known for years and years, so i know he'll do a great job.

[Sticky]

Wow $10/pc is a lot. I'd expect to pay half that.

 

Does the guy have the worlds smallest blanchard or does he not know that it's not a surface grinder and you can take doc's larger than a thou?

[mkd]

i'm guessing the labor is in the free stating and the fact you need to be super careful to cleanup .030+ out of flat plates with only .050-.070 to go after kissing.

 

i'm still surprised at the price.

 face milling is looking better all the time.

[brandon b]

You check with sheldons? He's right around the corner.over by the in n out off serfas club. He does some grinding for us.

[mkd]

i didn't even think about them, thanks.

wonder if they have a Blanchard? lol. one way to find out.....

[crazy^millman]

TCI Precision would be another choice. Could have them double disk ground and made to size then all you need to do is the finish work

[AMCNitro]

Sometimes its cheaper to make it someone else's problem, specially if its a company that specializes on what you need.  Sure, you'll be spending cash that could stay in your pocket, but headaches can be expensive...

[mkd]

TCI Precision would be another choice. Could have them double disk ground and made to size then all you need to do is the finish work

aah! didn't think of double disk either.

free state by default.

[mkd]

TCI: quote on the spot. Nice.

 

I must re-calibrate my grind-o-meter. They're all coming in the same.

 

 

CNC option: stack 15 plates in a pair of vises to cut the 6" width, both sides parallel.

lay down in vice clamping on 6" width and face mill flat under .005".

can we do better than $25 ea?

[Del.]

We have a 6 ft diameter blanchard. If I were doing them I think it would take me at least  4-5 days for batch of 100. Takes a lot of time to clean parts off and the table and deburr and check for flatness. I'd say $25 each is a bargain. Of course someone with a bigger blanchard could do better.

[mkd]

yeah actually the quote were higher i was just trying to make it compete with milling.

 we'll see if i get the job how milling really goes.

[Newbeeee™]

Sometimes its cheaper to make it someone else's problem, specially if its a company that specializes on what you need.  Sure, you'll be spending cash that could stay in your pocket, but headaches can be expensive...

wise words

[mkd]

Yes, I highly considered that. One thing is the customer doesn't want to submit a change in their process from milling to grind. Customer is trying to get me to buy a machine from one of their vendors that is retiring. Buying the old cnc is just as expensive as sending this job out to grind. Pretty tempting to have a paid off machine after one job. Plus possible old work from other vendor.

We'll see if anything comes of it all.

[Sticky]

We have a 6 ft diameter blanchard. If I were doing them I think it would take me at least  4-5 days for batch of 100. Takes a lot of time to clean parts off and the table and deburr and check for flatness. I'd say $25 each is a bargain. Of course someone with a bigger blanchard could do better.

 

How many doobs were you gonna burn in that time?

 

I'd expect to do that job in a few hours on a 36" machine.

[Del.]

How many doobs were you gonna burn in that time?

 

I'd expect to do that job in a few hours on a 36" machine.

I'd let you do it then.

[CAM-mando]

Curious how thick.

 

You may want to talk to your heat treater as far as keeping them reasonably flat and stress free. 4340 is an oil quench so they want to move when they hit the quench tank but can be flattened during tempering/sr.

 

 

[mkd]

.500 plate

.45 +/-.03

 

no PO yet.

[CAM-mando]

.005 isn't all that close but I def think maintaing free state flatness adds some cost. They aren't going to just suck them down on the magnet and not have them spring back. I'd be surprised if they weren't planning to at least dust side 1 and clean up side 2.

 

We have a small Blanchard in house but most production plate work I buy the plate from an outfit that dupplies the material and does flame cut/stress relieve and blanch. I just give them the final specs.