StopLossBags® are designed for oil, water, & alcohol-based wood finishes. They are not suitable for lacquer.
StopLossBags® allow you to preserve the fresh off-the-shelf quality of wood finishes. The specially formulated 3-ply construction helps prevent loss of solvents while a special gas barrier inhibits oxygen penetration into the bag. Each bag holds 1.05 quarts or 1.0 liters.
Almost all woodworkers have had the experience of throwing out cans of skinned-over varnish. Metal cans are excellent for transport and storage until opened, but are not designed for dispensing the finish or the exclusion of oxygen after some of the contents are used.
Once the finish has been transferred to a StopLossBags® it is easy to dispense, a lot or a little, into a cottage cheese container or other similar wide-mouthed container for applying the varnish. After pouring out what you need simply squeeze any bubble out of the bag before tightening the cap.
FILLING THE BAG
Filling the bag can be done by using a turkey baster, our Filler Tube and adapter Set, or our StopLossBag® Collapsible Funnel. To use a turkey baster, draw finish into it, then fit it over the spout of the bag. It will take a number of times to make the transfer. The Filler & Adapter Tube Set fits onto the spout of the StopLossBag® and allows it to connect to most funnels. We’ve included plans for the “filling station," a stand to hold a funnel connected to a StopLossBag (see our DIY Accessories page). The easiest transfer is with the StopLossBag Collapsible Funnel which fits over an opened quart or liter can and the spout of a StopLossBag. It can be cleaned without solvents. Non-Glossy Finishes should be well stirred to insure the matting agents are in suspension before transferring to a StopLossBag. After the transfer it will be easy to see through the clear bag wall the settled agents at the bottom of the bag. Putting them back into suspension is done by rotating and inverting the bag several times. It will be easy to see when it is ready to use.
Use the white information block on the front of the bag to record the finish you’re putting into each StopLossBag. A Magic Marker type of pen works well, and it wipes away easily with alcohol.
We wish you well on your woodworking projects and hope that you find StopLossBags to be a positive addition to your woodworking by saving you money, giving your better and more consistent results, and reducing waste.
One Year Side by Side Test (StopLossBags® vs. Original Cans)
On July 31, 2014 we began long-term testing of oil-based wood finishes in StopLossBag. The finishes were put into the bags, then weighed on a scale sensitive to plus or minus 0.1 gram. The bags were weighed regularly on the same scale. At the end of one year, these are the results:
Salad Bowl Finish
The majority of the pint can of a popular salad bowl finish (approx. 4/5 of the can) was transferred to a StopLossBag and the rest left in the metal can. The lid was firmly replaced on the can, and the bubble of air at the top of the bag was squeezed out before tightening the cap. The finish (and StopLossBag) was weighed and the result written down, the finish left in the can was not weighed.
The weight of the Salad Bowl Finish on July 31, 2014 was 387.5 grams. When it was weighed one year later, on July 31, 2015, it weighed 387.0 grams, a loss of 0.5 gram, or 99.87 of its original composition.
The finish left in the original metal can skinned over in 46 days.
The majority of the quart can of very popular gloss polyurethane (approx 4/5 of the can) was transferred to a StopLossBag and the rest left in the metal can. The lid was firmly replaced on the can, and the bubble of air at the top of the bag was squeezed out before tightening the cap. The finish (and StopLossBag) was weighed and the result written down, the finish left in the can was not weighed.
The weight of the Minwax Gloss Polyurethane on July 31, 2014 was 709.9 grams. When it was weighed one year later on July 31, 2015, it weighed 709.6 grams, a loss of 0.3 grams, or 99.958% of its original composition.
The finish left in the original metal can skinned over in 54 days.
We are confident that StopLossBags represent an effective method of storage with simple dispensing and resealing, and that woodworkers using them according to instructions will benefit from their finishes being at or near their original formulation longer.
Our testing continued past the original 12 months original time, with the following results with StopLossBags® after two full years.
Salad Bowl Finish 385.8 g, which is 99.77% of original weight
Danish Finish 671.3g, which is 99.90% of original weight
Polyurethane 708.7g, which is 99.73% of original weight
All three finishes appeared to be of original solids-to-solvents ratios, some ambering of the finish was observed.