[WWI] WWI List Re: Hyperscale W29 build - strange lozenge

Karen Rychlewski krychski at earthlink.net
Fri Jul 29 23:24:47 EDT 2011

Rob & Bob

DSA made a big point of describing how carefully he aligned and secured the sample so that the warp and weft were perpendicular to each other...and then saw that the pattern was printed at that 5 degree angle.

I'm just reporting on this since someone mentioned the 5 degree tilt. Personally, I agree with Shane and others that printing the hexes leaning lazily to the right serves no reasonable purpose and the whole idea seems to be disproven by photos showing the hex 'flats' aligned with the wing's leading edge. I'm sorry I can't post DSA's whole article because of copyright laws, but if you can dig up a copy of WWIAero, Nov '91, you'll find the whole thing there.

Brent, as an aside, I believe it *would* be possible to print that skewed pattern from a roller--a pattern need not be perpendicular to the width of the roller...otherwise how could diagonal stripes (like a barber's pole) be printed? But Shane's question still stands: Why??


Sent from my iPad watching the Cubs lose again: 9-2...oh woe

On Jul 29, 2011, at 10:32 PM, "Rob" <rob at rob-stewart.to> wrote:

> I'm with Shane on this, due to Occam's Razor.
> DSA could easiyl have had a misaligned sample.
> From: "Bob Pearson" <bpearson at citytel.net>
> Sender: wwi-bounces at wwi-models.org
> Date: Fri, 29 Jul 2011 18:41:30 -0700
> To: World War I Modeling Mailing List<wwi at wwi-models.org>
> ReplyTo: World War I Modeling Mailing List <wwi at wwi-models.org>
> Subject: Re: [WWI] WWI List Re: Hyperscale W29 build - strange lozenge
> I was thinking perhaps it was printed with the pattern perpendicular to the length, but then have it skewed slightly by stretching it after one edge was affixed. This may keep any  thread group from being on a single rib.
> ----- Original Message -----
> From: BT
> To: World War I Modeling Mailing List
> Sent: Friday, July 29, 2011 6:37 PM
> Subject: Re: [WWI] WWI List Re: Hyperscale W29 build - strange lozenge
> I will chime in here....
> From a manufacturing standpoint it would be nearly impossible to print using rollers. The pattern needs to be perpendicular to the rollers.
> To quote one of the smartest engineers I know "That don't make no sense!"
> Brent
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