Dm Reduce
SRD Multiple magical effects that reduce size do not stack.
So you can either reduce or shrink item.
Dear Mr. Elf Lizard Lips,
According to the Wizards, Sorcerers, and plumbers Union 137, the spells reduce and Shrink item duplicate the similar affects so only the first spell, which is a cast result in affect on the item.
Shrink item is a 3 rd level spell requires either a 5-circle wizard or 6-circle sorcerer.
Transport of items or ingots.
The wizard could shrink an item up to 10 cubic feet, which becomes a 5 ft by 2 ft by 1-foot ingot.
The sorcerer could shrink an item up to 12 cubic feet, which becomes a 6 ft by 2 ft by 1 ft ingot.
Gold weighs 1188.6 pounds per cubic foot source
http://www.18carat.co.uk/densityofgoldandothermetals.html note this almost pure weight.
10 cubic feet of gold would be 1188.6 PDS x 10 = 11,886 PDS or 594,300 gp. After casting, the ingot would about 5.943 PDS and
5 inches by 2 inches by 1 inch. This would be same size for all blocks
Marble weights 170 PDS per cubic foot
10 cubic feet of marble would be 1700 PDS. After casting the block would be .85 of a pound
Pure iron 490 PDS per cubic foot
10 cubic feet of iron would be 4900 PDS. After casting the block would be 2.45 PDS.
http://usa.spis.co.nz/fitz/roleplay/weight_chart.html iron and marble source
Note ingots or stone would have to be approx 2.1544 ft per side.
Why transport of large, heavy shrunken items may have possibilities? The following objections have been noted.
The spell is ended when tossed on a solid surface so the lawsuits and blood feud from the teamsters due to less than diligence care and handling. Imagine Bubba teamster Surprise when his small packing envelope explodes to reveal a 5 foot wall of gold has just crush his fingers and wagon.
If the wizard accompanies the item, a guard force would have to be hired.
Dispelling magic may and will cause harm to the transport team. Again Wizards, Sorcerers, and plumbers Union 137 rather be required to tackle an ancient 3 rd edition red dragon and 1 st edition 15-circle bard than have the teamsters wanting to talk the situation over.
Steel boats. Very interesting. Steel is approximately 500 pds per cubic foot.
Casting shrunken boats to create a navy.
Problems
Great care will taken in smelting / melting process. Any loss due to spillage will result in large blobs of heavy metal appearing every 5 days in the worker place causing worker elf claims compensation to increase.
Molds made be destroyed if the mold is not totally material free.
Any defects in the original mold will be increase 12 times in the unreduced state.
A solid metal ship may work but will be subject to great stresses. A wooden plank can be shored up.
Rust monsters would destroy a steel fleet in a night.
DM NOTE. Possible would allow this but would currently make craft item DC very high.
Other notes
Stone shape is a 3- level divine or 5-level arcane spell. Which will require 5-circle cleric/druid. Or will require a 9-circle wizard, 10-circle sorcerer. Furthermore since you are only of the 4?circle, you may know the spell allows you to shape stone. While it?s possible to make crude coffers, doors, and so forth with stone shape, fine detail isn?t possible. There is a 30% chance that any shape including moving parts simply doesn?t work.
research into Improved Stone Shape is in progress but it will be 2 levels higher in power.
Thank you for you letter,
Bo C Fuss Bear O Crat.
The player may be smart. But needs to read the book.