Squish band cutting questions

[Deets066]

That's one helleva book, lots of chit in there

 

[Termitebuffet]

Do it got much pitchers?

 

[Termitebuffet]

That's one helleva book, lots of chit in there

Which books Deets?

 

[Deets066]

Which books Deets?

Dis one

 

[wcorey]

Wow, up to #30 already, my newest one is #23, probly mid 80's vintage.
I doubt much has changed, from my perspective anyway...

 

[srcarr52]

Ummmmm ......
I run about 325 rpm, thats the lowest mine will spin. It’s not a constant cut, you have to also consider that if a cylinder isn’t balanced, the fastet that you try to spin it, the more your whole machine can vibrate or shake

I spin them at 500, I'll spin them faster if they are not terribly off balance. Surface speed is needed for clean cuts in aluminum.

High rake tooling helps a lot too. I use a positive rake 32.51 CCGT carbide in a 1" carbide boring bar.

My squish cutting plate is 4.5 square by 1". I drill 1/4x20 holes and make any stud I need from all thread. Most of the ones I use are turned down on the cylinder end and threaded for M5 nuts.

 

[twinstaged]

You can make out what insert that is here and look at some other options. Several pages in this book dedicated to holders and inserts.

 

[Jimmy in NC]

I forgot
You don’t math
My sorry

Too much hassle to take his shoes off.... then gotta get help with the loops and swoops putting them back on.

Sent from my SM-G920V using Tapatalk

 

[Adirondackstihl]

Too much hassle to take his shoes off.... then gotta get help with the loops and swoops putting them back on.

Sent from my SM-G920V using Tapatalk

 

[Outback]

Thanks again guys. I've been grinding my own HSS for a year now. Sharpen a lot of tools also, have various stones for after grinding. Fully aware of the benefit of aggressive angles/clearances on aluminum. The carbide inserts I have are speced for aluminum.

I chose the insert bar because I mess mostly with huskies. I imagine D chambers are a little interrupted in the cut but not the hemi's so much. I use the HSS for the bases.

I saw a couple base pictures on here recently that were smeared and not shiny. I'm not calling anybody out as I know very little. If your cut speed isn't high enough and cutter angle, the aluminum sticks to the cutter tip also aiding in the fog.

srcarr, I also like to overbuild it once. As always lots of good info guys.

 

[Deets066]

Real easy to cut it in the mill after you cut the head off

 

[srcarr52]

Thanks again guys. I've been grinding my own HSS for a year now. Sharpen a lot of tools also, have various stones for after grinding. Fully aware of the benefit of aggressive angles/clearances on aluminum. The carbide inserts I have are speced for aluminum.

I chose the insert bar because I mess mostly with huskies. I imagine D chambers are a little interrupted in the cut but not the hemi's so much. I use the HSS for the bases.

I saw a couple base pictures on here recently that were smeared and not shiny. I'm not calling anybody out as I know very little. If your cut speed isn't high enough and cutter angle, the aluminum sticks to the cutter tip also aiding in the fog.

srcarr, I also like to overbuild it once. As always lots of good info guys.

I've found that some cylinder material just doesn't like to be cut cleanly. Even the factory cut is smeared. The 365/372XT cylinders is a good example.

I've tried faster RPM, more rake, deeper cuts, skim cuts, ext. Nothing seems to help.

 

[thomas1]

I've found that some cylinder material just doesn't like to be cut cleanly. Even the factory cut is smeared. The 365/372XT cylinders is a good example.

I've tried faster RPM, more rake, deeper cuts, skim cuts, ext. Nothing seems to help.

Poor casting density, perhaps?

 

[Outback]

Cheap alloy? I do really appreciate all you guys are adding here. Except for feeding me MAD to go with the CAD. The want for a bridgeport just grows and grows. Thanks deets.

srcarr, Did you ever try any PCD? Diamond tooling is supposed to do wonders with aluminum. I have never tried any.

 

[srcarr52]

Cheap alloy? I do really appreciate all you guys are adding here. Except for feeding me MAD to go with the CAD. The want for a bridgeport just grows and grows. Thanks deets.

srcarr, Did you ever try any PCD? Diamond tooling is supposed to do wonders with aluminum. I have never tried any.

Not for this applications, inserts are really expensive and often need a special tool holder. But I'm not going to spend $300-500 to get a better surface finish that I don't really need.

The automotive machine shops I've worked at use CBN or PCD pucks for head gasket surfaces, especially for the newer multi-layer steel gaskets.