LetterBox Framed Burr IPP42 Exchange Puzzle

An original puzzle designed by Frank Potts, made and given in IPP42 exchange in Tokyo, 2025. I’ve added a printed solution sheet but could also give you the BurrTools file if you need it.

Goal: Remove the 3 stamped envelopes from the LetterBox and put them back in again. You’ve got plenty of time; it’s snail mail.

The puzzle is three interlocked burr pieces inside a clear box set on a base.  A very difficult caged burr.

The puzzle is laser cut from 3mm clear acrylic and 5mm white and blue acrylic pieces.

Size: Base: 65mm x 65mm x 10mm Clear box: 48mm x 48mm x 48mm.

Packaged in a kraft cardboard box.

General Information:

If you would like to purchase and combine ship with another fixed price or auction item please PM me or email me at mrpuzzle@mrpuzzle.com.au.  I’ll quote based on exact weight but it should not be much higher than the standard base cost.

All prices in Australian Dollars (not US Dollars).  We much prefer payment via Wise because the charges are far less. But we can accept PayPal. 

The puzzles will be shipped from us here in Australia by Australia Post.

Cost to ship this puzzle by Standard:

Australia 10.00 / NZ 21.00 / US/Canada/EU/Asia  25.00 UK/Scandinavia 36.00 / Other countries please request a quote.

Cost to ship this puzzle by Express:
Australia 15.00 NZ 38.00 / US/Canada/EU/Asia  44.00 / UK/Scandinavia 49.00/ Other countries please request a quote.

Import duties/tariffs are not included in the price.
The import duty or tariff rate may be different for every country so please check the rate that applies to your own country.

It is usual practice that import duties or tariffs are paid by the buyer at the point of import or delivery in your own country.

USA is the exception. The USA government has mandated that the tariff be paid to them from Australia before we can send the parcel. The tariff percentage may be different depending on where the puzzle was made. For Mr Puzzle puzzles made here in Australia the rate is 10% + Admin fee.  I will note the country of origin in the puzzle listing.