Author Topic: Why is the interior of the top of my cedar chest sticky?  (Read 564 times)

0 Members and 1 Guest are viewing this topic.

Offline lshah72414

  • Posts: 134
I fabricated a cedar chest for my wife around Thanksgiving/Christmas 2021. Polished, and sealed outside and inside of top only with Osmo Poly-Oil High Solid 3031 Clear Matte. About two weeks after I put it in the bedroom, I opened up the chest and the inside of the top only felt sticky. Thought maybe the Osmo hadn't completely setup( I did leave it for 2 days before attaching to chest). I wiped with paper towels and it was gone, smooth and looked beautiful. Left as is.
Fast forward to today, I opened chest and inside is sticky again, even worse paper towel now sticks, it is like the adhesive you would feel on a sticker. I used isopropyl alcohol and that seems to cut the stickiness. Again looks beautiful, but my question is "Does anybody know what is going on? How do I prevent this from happening in the future? No where else is it sticky, the outside of the chest feels nice and smooth and looks fine. It is only the inside of the top of chest. Room is approximately 70 degrees F, and humidity is normal. Room is dry.
Thank you for your help.
« Last Edit: June 21, 2022, 12:16 PM by lshah72414 »

Festool USA does not pre-approve the contents of this website nor endorse the application or use of any Festool product in any way other than in the manner described in the Festool Instruction Manual. To reduce the risk of serious injury and/or damage to your Festool product, always read, understand and follow all warnings and instructions in your Festool product's Instruction Manual. Although Festool strives for accuracy in the website material, the website may contain inaccuracies. Festool makes no representations about the accuracy, reliability, completeness or timeliness of the material on this website or about the results to be obtained from using the website. Festool and its affiliates cannot be responsible for improper postings or your reliance on the website's material. Your use of any material contained on this website is entirely at your own risk. The content contained on this site is provided for informational purposes only and does not constitute professional advice.


Offline scb_yyz

  • Posts: 23
  • Grudge No Toil.
Re: Why is the interior of the top of my cedar chest sticky?
« Reply #1 on: June 22, 2022, 08:03 AM »
Perhaps it's out-gassing of the finish in the enclosed air space. Try keeping the lid slightly open to allow air exchange.  But if it's only on the top, that's weird.. is it sitting in the sunshine, letting the top get hotter than the rest?
DF500  OF1010 TSC55  ETSC125/3  DTSC400 PSC420  TID18 T18 2xFSK/1400-2LR32+TSO TCL-6 SCA-8 Sys-Cart CT36E-HEPA+BT PARF MkII UJK WERA WIHA Bridge City

Offline sawdustinmyshoes

  • Posts: 111
Re: Why is the interior of the top of my cedar chest sticky?
« Reply #2 on: June 22, 2022, 09:39 AM »
I’ve experienced this bleeding out of oil over time.  I’ve also had it vary from piece to piece within a project depending on if the pieces are made from the same board/tree.  I usually do not oil the inside of cases due to outgassing, odor, etc.  If I choose to apply any finish at all to the interior, I limit it to shellac.

I would apply two coats of shellac to the interior.  Wipe it down with mineral spirits first and smooth the final coat to your liking.  That should solve the issue.

Offline lshah72414

  • Posts: 134
Re: Why is the interior of the top of my cedar chest sticky?
« Reply #3 on: June 22, 2022, 10:02 AM »
Thank you for responses.
Chest does not sit in sun, and it is only the inside of the top(area not exposed directly to air), not the outside which is sticky. I did leave lid open for a day the first time and thought all was well. The inside is not hermetically sealed, but top is heavy and creates somewhat of a seal, so perhaps that is the problem. Will try mineral spirits and shellac if this continues. Never had this happen before.
Thank you again

Offline sawdustinmyshoes

  • Posts: 111
Re: Why is the interior of the top of my cedar chest sticky?
« Reply #4 on: June 22, 2022, 10:10 AM »
Good luck!

Ironically, I recently had this happen to two tops for cedar chests when they were exposed to heat/sun (as mentioned above) directly before applying the topcoats.  The heat drew the oil out and created fisheyes in the topcoat, resulting in me having to chemically strip the tops and start over (see photos). In the last photo you can see the residual oil bleeding out of the top after removing the stripper.

Shellac is a bit of a miracle finish in regard to its sealing abilities.  When I reworked the tops, I applied boiled linseed oil in the evening, wiped off excess, and sprayed two coats of shellac over it the following morning (about 12 hours later) with no adherence issues, so it all worked out in the end.