Refill 8 oz butane canister with propane?

[nopeda]

Hi,

I like the compact butane stoves that use an 8 oz bottle and am interested in refilling them with propane. I've refilled the 1 lb propane bottles from 20 lb propane tanks many times with no problems by the following method: Put the empty 1 lb bottle in the freezer 'till it gets cold, attach it to the adapter on the 20 lb tank and turn the rig upside down, open the tank's valve for a minute or more until it stops hissing into the bottle, then close the valve and remove the filled 1 lb bottle.

Will that same or a similar method work to refill the 8 oz butane bottles from 20 lb propane tanks? Is there a danger of over pressuring the 8 oz bottles since they don't seem to be as strong heavy metal a container as the 1 lb propane bottles?

I've found a couple of adapters that look made for the job, but would be glad for any additional suggestions. These are what I've found so far:

https://www.amazon.com/Propane-Refill-Adapter-Butane-Isobutane/dp/B089FHZ9XV/ref=asc_df_B089FHZ9XV/?tag=hyprod-20&linkCode=df0&hvadid=459722854789&hvpos=&hvnetw=g&hvrand=10565074402883207944&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9002632&hvtargid=pla-944361621824&psc=1

Outdoor-Camping For Gas Butane Cylinder Tank Refill Connector-Adapter Valve - Walmart.com

Arrives by Wed, Jun 7 Buy Outdoor-Camping For Gas Butane Cylinder Tank Refill Connector-Adapter Valve at Walmart.com

www.walmart.com

Thank you for any help learning to do this!
David
Maine, USA

 

[dogstar]

My understanding is the butane is kept at lower pressure, and the containers are designed accordingly. I don't think it is a good idea to transfer propane to a butane canister. The danger is not worth saving a few bucks.