Skimming an Engine Block

Well i finally had a go at skimming an engine block .....
And i don't think it went to bad at all even managed to learn something in the process witch resulted in a near perfect Finnish.....

First pass:
RPM: 800
Feed: 75 mm/min
DoC: 0.02 (roughly)

Finnishing:
RPM: 1160
Feed: 15 mm/min
DoC: 0.01 (roughly)

OIL:
wd-40
used engine oil
iso 68

Twitter:

Don't like talking in Videos ................. We will see how it goes ?.......

[bjorntheviking]

I am glad I watched till the end before commenting, that ringing was as a result of the geometry of the cutter but you worked it out, great video fun to watch even for us old engineers

[robertoudokrapf]

OLÁ. Deu para perceber que sua plaina de cabeçote está desregulada. A confirmação de boa planicidade é o acabamento final COM CRUZAMENTO. No seu caso uma régua de precisão manipulada de forma correta lhe mostrará o defeito.. ABRAÇOS Roberto Udo Krapf

[irishwristwatch]

Good thing its not going back together - there's a rogue bolt in one of the spark plugs!

[BentSpanner]

Try static balance the fly cutter with the tool you intend to use.

I use 3/8 carbide solid button inserts for roughing cuts and for composite head gaskets finishes, the carbide picks up and gums up with alloy and kinda drags it thru the cut, wd40 helps reduce this though.
pcd 3/8 solid button for mirror finish for mls head gaskets and cbn 3/8 solid buttons for cast iron heads/blocks


A solid button last longer and loads the tool nicely especially through interrupted cuts. I use kerosene or wd40 for cutting alloy with both carbide and pcd but no fluid for the cbn cuts

[edsmachine]

Nice work.
Thanks for sharing.
Take care, Ed.

[AshLongie]

Very nice learned a bit from it, would you say slowing spindle speed would help ?

[honeycuttracing]

There's no way those head bolts should have been that tight, been wrenching on cars for 25+ years and never had a head bolt that stubborn! Nice finish 👏 👌 hoping for the same when we finish up our shop built Drill-Mill

[paul.newland]

The insert tool you’re using @16:36 would work much better if you turned it around - all of the cutting force is being taken up by the clamping screws which may be causing the ringing…

Reverse the cutter and reverse the spindle direction so the cutting forces are taken up by the body of the shell.

[adamdiaz]

How did u get on with this mate I’ve built a similar cutter which I’m just testing but also bought a 8” face mill with 20 cutters to have a play with😂

[marcumexe]

Anytime you hear that clanging you are using the wrong cutter geometry, when it's right the orchestra will be silent you think that surface is flat but quite the opposite, this old boy
should have someone who knows sharpen that toolbit for him..

[TheMoody]

that is the same dro I just removed off of my chevalier milling machine