Just drilled six holes in my test panel and filled with epoxy. Have to wait for cure and then I'll compare pilot holes and screws to plastic anchors. I did two holes using Thixo Flexible epoxy which is new to me but very easy to use. I really like how it mixes itself in the nozzle and comes out a gel. Prepped all the holes the same: undercut with a router bit in my drill to remove a little extra balsa so the epoxy plug has a top flange to hold it in. It's 85 here so I used slow hardener to get a fair test. Painted all the balsa with neat 105/206 using a very small acid brush and then added 404 to the mix until ketchup consistency and slowly worked the thickened epoxy into each of the first four holes using the mixing stick and the small brush being careful not to trap air. Filled the last two holes with Thixo after painting the balsa with neat 105/206.
Chuck S > On 06/25/2020 10:12 AM CHARLES SCHEAFFER via CnC-List > <cnc-list@cnc-list.com> wrote: > > > Hi Dennis, > Agree on applying neat epoxy before thickened epoxy. It eliminates air > gaps and extends the bond deeper into the core. You're suggesting I pilot > hole and screw into the cured epoxy and not use plastic anchors? > > Chuck S > > > > > > On 06/24/2020 6:39 PM Dennis C. via CnC-List > <cnc-list@cnc-list.com> wrote: > > > > > > I'd overbore the holes, coat the wood with neat epoxy (no > > thickener) using a cotton swab or equivalent then fill with epoxy thickened > > with microfibers. Redrill and use new screws same size as the original. > > > > I don't like using thickened epoxy without coating with neat epoxy > > first. You don't get as good a bond and you may leave gaps. > > > > Dennis C. > > Touche' 35-1 #83 > > Mandeville, LA > > > > On Wed, Jun 24, 2020, 2:51 PM CHARLES SCHEAFFER via CnC-List < > > cnc-list@cnc-list.com mailto:cnc-list@cnc-list.com > wrote: > > > > > > > > > > > > > > > > > > > > _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each > and every one is greatly appreciated. If you want to support the list - use > PayPal to send contribution -- https://www.paypal.me/stumurray > >
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