ULF-1 Discussion Archive
Anonymous static archive of the former Mailman list
Anonymous static archive of the former Mailman list
Re: [ULF-1] Ulf-1 Digest, Vol 70, Issue 8
I disagree about not sanding before gluing. A power planer of a hand planer bends the fibers over and leaves a shiny surface, not good for glue penetration. I have a cabinet shop and glue stuff together daily. For a couple years I glued up 12 ply (birch and maple) propeller blanks for a prop manufacturer. All those ply's after planeing were smooth and shiny because of the bent over fibers. Before gluing (with Resorcinol glue) I'd run over them with a belt sander/80 grit across the grain, one pass to give the Member 60 some (tooth). Then use a shop vac to clean and make those (damaged) fibers stand up straight and accept more glue penetration. On Mon, Jun 11, 2018 at 2:03 PM, <[email]> wrote: > Send Ulf-1 mailing list submissions to > [email] > > To subscribe or unsubscribe via the World Wide Web, visit > http://lists.ulf-1.com/listinfo.cgi/ulf-1-ulf-1.com > or, via email, send a message with subject or body 'help' to > [email] > > You can reach the person managing the list at > [email] > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Ulf-1 digest..." > > > Today's Topics: > > 1. Re: Ulf-1 Digest, Vol 70, Issue 4 (Member 118) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Mon, 11 Jun 2018 20:37:56 +0100 > From: Member 118 <[email]> > To: [email] > Subject: Re: [ULF-1] Ulf-1 Digest, Vol 70, Issue 4 > Message-ID: <[email]> > Content-Type: text/plain; charset="us-ascii" > > Hi, > > Just a point on sanding. Not recommended for the Member 60 surfaces, but an > absolute must for plywood in order to remove the release agent that is > generated in the manufacturing process from the surfaces to be glued > otherwise there is a risk of failure. Give it a good brush after to remove > the dust. > > Regards, > > Colin > > Sent from my iPad > > > On 11 Jun 2018, at 15:07, Member 121 <[email]> wrote: > > > > Sounds like i got dropped into this gluing surface preparation > conversation . > > I thought you meant don't do it on the patio . > > > > > > > > Sent from my MetroPCS 4G LTE Android Device > > > > -------- Original message -------- > > From: Member 50 <[email]> > > Date: 6/11/18 1:39 AM (GMT-07:00) > > To: [email] > > Subject: Re: [ULF-1] Ulf-1 Digest, Vol 70, Issue 4 > > > > Double sided tape works well on long lengths > > > > -----Original Message----- > > From: Ulf-1 [mailto:[redacted] On Behalf Of Austin > > Member 111 > > Sent: 11 June 2018 02:20 > > To: [email] > > Subject: Re: [ULF-1] Ulf-1 Digest, Vol 70, Issue 4 > > > > Hi Greg. > > > > The instructions pretty clearly forbid the use of sanding to shape as it > > damages the fibers. > > > > I have a block plane but was wondering which other types of planes will > be > > needed, and if a band saw can be used to get it roughed out first. I have > > ever seen nor used a toothing plane and would like information on who > makes > > a good one and how to use it. > > > > As to planing, how do you restrain the workpiece during work? A vise with > > some Member 60 to keep the jaws from marring the grain. > > > > Thanks > > > > Austin > > > > > On Jun 10, 2018, at 6:12 PM, [email] wrote: > > > > > > Send Ulf-1 mailing list submissions to > > > [email] > > > > > > To subscribe or unsubscribe via the World Wide Web, visit > > > http://lists.ulf-1.com/listinfo.cgi/ulf-1-ulf-1.com > > > or, via email, send a message with subject or body 'help' to > > > [email] > > > > > > You can reach the person managing the list at > > > [email] > > > > > > When replying, please edit your Subject line so it is more specific > > > than "Re: Contents of Ulf-1 digest..." > > > > > > > > > Today's Topics: > > > > > > 1. Gluing surface preparation (Member 111) > > > 2. Re: Gluing surface preparation (Member 121) > > > 3. Re: Gluing surface preparation (Member 121) > > > 4. Watch "ULF-1 Sailplane 2.part" on YouTube (Member 121) > > > 5. 120 thousandths of an inch . I used a knife to quicken the > > > flatening of the part alignment . (Member 121) > > > > > > > > > ---------------------------------------------------------------------- > > > > > > Message: 1 > > > Date: Sun, 10 Jun 2018 15:58:42 -0600 > > > From: Member 111 <[email]> > > > To: [email] > > > Subject: [ULF-1] Gluing surface preparation > > > Message-ID: <[email]> > > > Content-Type: text/plain; charset=us-ascii > > > > > > Member 67 et al, > > > > > > Did you use a fine toothing plane to rough up all spruce and ply at the > > bonding areas? Could you describe your method of shaping parts with > complex > > geometries like spar caps? Did you use a series of planes? Would you mind > > sharing what brand, type, and methodologies of cutting and sharpening > them > > if so? Also for inspection, was a simple scale used to measure cap height > > and width or were calipers and more precise methods used? Thanks again > for > > being so active and forthcoming with details about your great project. > > > > > > Austin > > > > > > ------------------------------ > > > > > > Message: 2 > > > Date: Sun, 10 Jun 2018 15:07:44 -0700 > > > From: Member 121 <[email]> > > > To: [email] > > > Subject: Re: [ULF-1] Gluing surface preparation > > > Message-ID: > > > > > > <[email]> > > > Content-Type: text/plain; charset="utf-8" > > > > > > I suppose sanding a connection flat so the gusset make good flat > > > contact first is easier with an electric sander . > > > Let the rudder or aileron diagonals extend long , and the cut all > > > with one pass of the saw to get perfect length on all at the same time > . > > > I used a caliper type micrometer that measures inside or outside . > > > We have been using a hand plane 8 inches wide for scraping , shaving > > > ( or whatever it's called ) the hand made plywood of 3 layers > > > alternately grain direction I have to go > > > > > > On Sun, Jun 10, 2018, 2:58 PM Member 111 > > > <[email]> > > > wrote: > > > > > >> Member 67 et al, > > >> > > >> Did you use a fine toothing plane to rough up all spruce and ply at > > >> the bonding areas? Could you describe your method of shaping parts > > >> with complex geometries like spar caps? Did you use a series of > > >> planes? Would you mind sharing what brand, type, and methodologies of > > >> cutting and sharpening them if so? Also for inspection, was a simple > > >> scale used to measure cap height and width or were calipers and more > > >> precise methods used? Thanks again for being so active and forthcoming > > with details about your great project. > > >> > > >> Austin > > >> _______________________________________________ > > >> ULF-1 discussion list -- [email] > > >> > > >> Subscribe, Unsubscribe, Preferences, List information: > > >> http://lists.ulf-1.com/listinfo.cgi/ulf-1-ulf-1.com > > >> > > > -------------- next part -------------- An HTML attachment was > > > scrubbed... > > > URL: > > > <http://lists.ulf-1.com/private.cgi/ulf-1-ulf-1.com/attachments/201806 > > > 10/c2823f93/attachment-0001.html> > > > > > > ------------------------------ > > > > > > Message: 3 > > > Date: Sun, 10 Jun 2018 15:19:01 -0700 > > > From: Member 121 <[email]> > > > To: [email] > > > Subject: Re: [ULF-1] Gluing surface preparation > > > Message-ID: > > > > > > <[email]> > > > Content-Type: text/plain; charset="utf-8" > > > > > > Epoxy can be stapled to hold parts . But removing staples is a good > > > idea when its cured or dry so the don't stain the Member 60 > > > > > > On Sun, Jun 10, 2018, 2:58 PM Member 111 > > > <[email]> > > > wrote: > > > > > >> Member 67 et al, > > >> > > >> Did you use a fine toothing plane to rough up all spruce and ply at > > >> the bonding areas? Could you describe your method of shaping parts > > >> with complex geometries like spar caps? Did you use a series of > > >> planes? Would you mind sharing what brand, type, and methodologies of > > >> cutting and sharpening them if so? Also for inspection, was a simple > > >> scale used to measure cap height and width or were calipers and more > > >> precise methods used? Thanks again for being so active and forthcoming > > with details about your great project. > > >> > > >> Austin > > >> _______________________________________________ > > >> ULF-1 discussion list -- [email] > > >> > > >> Subscribe, Unsubscribe, Preferences, List information: > > >> http://lists.ulf-1.com/listinfo.cgi/ulf-1-ulf-1.com > > >> > > > -------------- next part -------------- An HTML attachment was > > > scrubbed... > > > URL: > > > <http://lists.ulf-1.com/private.cgi/ulf-1-ulf-1.com/attachments/201806 > > > 10/73b31a63/attachment-0001.html> > > > > > > ------------------------------ > > > > > > Message: 4 > > > Date: Sun, 10 Jun 2018 15:45:12 -0700 > > > From: Member 121 <[email]> > > > To: [email] > > > Subject: [ULF-1] Watch "ULF-1 Sailplane 2.part" on YouTube > > > Message-ID: > > > > > > <[email]> > > > Content-Type: text/plain; charset="utf-8" > > > > > > https://youtu.be/86rOfjhsIIM > > > > > > Have you seen this video ? The ulf1 gets an engine near the end of > > > the movie in the winter . > > > -------------- next part -------------- An HTML attachment was > > > scrubbed... > > > URL: > > > <http://lists.ulf-1.com/private.cgi/ulf-1-ulf-1.com/attachments/201806 > > > 10/42d58dbc/attachment-0001.html> > > > > > > ------------------------------ > > > > > > Message: 5 > > > Date: Sun, 10 Jun 2018 17:12:12 -0700 > > > From: Member 121 <[email]> > > > To: [email] > > > Subject: [ULF-1] 120 thousandths of an inch . I used a knife to > > > quicken the flatening of the part alignment . > > > Message-ID: > > > > > > <[email]> > > > Content-Type: text/plain; charset="utf-8" > > > > > > > > > -------------- next part -------------- An HTML attachment was > > > scrubbed... > > > URL: > > > <http://lists.ulf-1.com/private.cgi/ulf-1-ulf-1.com/attachments/201806 > > > 10/234b95c8/attachment.html> > > > -------------- next part -------------- A non-text attachment was > > > scrubbed... > > > Name: 20180610_170904.jpg > > > Type: image/jpeg > > > Size: 1458598 bytes > > > Desc: not available > > > URL: > > > <http://lists.ulf-1.com/private.cgi/ulf-1-ulf-1.com/attachments/201806 > > > 10/234b95c8/attachment.jpg> > > > > > > ------------------------------ > > > > > > Subject: Digest Footer > > > > > > _______________________________________________ > > > Ulf-1 mailing list > > > [email] > > > http://lists.ulf-1.com/listinfo.cgi/ulf-1-ulf-1.com > > > > > > > > > ------------------------------ > > > > > > End of Ulf-1 Digest, Vol 70, Issue 4 > > > ************************************ > > _______________________________________________ > > ULF-1 discussion list -- [email] > > > > Subscribe, Unsubscribe, Preferences, List information: > > http://lists.ulf-1.com/listinfo.cgi/ulf-1-ulf-1.com > > > > _______________________________________________ > > ULF-1 discussion list -- [email] > > > > Subscribe, Unsubscribe, Preferences, List information: > > http://lists.ulf-1.com/listinfo.cgi/ulf-1-ulf-1.com > > _______________________________________________ > > ULF-1 discussion list -- [email] > > > > Subscribe, Unsubscribe, Preferences, List information: > > http://lists.ulf-1.com/listinfo.cgi/ulf-1-ulf-1.com > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: <http://lists.ulf-1.com/private.cgi/ulf-1-ulf-1.com/ > attachments/[phone]/09d10142/attachment-0001.html> > > ------------------------------ > > Subject: Digest Footer > > _______________________________________________ > Ulf-1 mailing list > [email] > http://lists.ulf-1.com/listinfo.cgi/ulf-1-ulf-1.com > > > ------------------------------ > > End of Ulf-1 Digest, Vol 70, Issue 8 > ************************************ > --