There was no liner; I produced channels: a positive print of the
negative space of a regen engine that is typically full of fuel and
the fuel inlet manifold that they flow from. Then electroplated onto
the inner, outer, and interstitial surface of the channels to create
an engine. Then removed the plastic from the channels.
I have pictures somewhere, may be able to find them this week.
On Mon, Jul 15, 2019 at 5:52 PM Ed LeBouthillier
<codemonky@xxxxxxxxxxxxx> wrote:
On Mon, 2019-07-15 at 16:12 -0700, Ben Brockert wrote:
This is what I did on a similar project at Armadillo, printed the
channels with FDM in ABS and then electroformed the closeout inside
and out. Then removed the plastic with an ultrasonic cleaner of warm
acetone, which worked surprisingly well at clearing out deep channels
of plastic. The minimum size of a workable engine is set by the
resolution of the plastic printer; an SLA printer would be much
better suited to getting good surface finish and small features.
Is this kind of like the corrugated liner that the Russians did? In
other words, you produced a corrugated liner closed out the channels
and then plated the outer (and inner walls)?
