Eisenwerk Miniatures and their Space Tak rules and minis evolved to become PewterCraft with their expanded GaLakTik TakTik line of starship miniatures and expanded rules.  Note that the name is correctly spelled with the capital L and T's as you can see in this rules scan.  These miniatures are not common but some can still be found through auctions and resellers.  The molds for these minis are in private hands and they have been looking at casting more for sale.
 
There are five identified major Empires: The Dominion; Earth Colonies; Black Alliance; Konfederation X; and, United Science Associations which control most of the planets within the explored sectors. There are also numerous minor powers and space pirates who prey on intergalactic trade.  Recently, aliens from another galaxy, The Omega Aliens, appeared in this galaxy and began raiding planets of the major Empires. The Omegan’s goal is to rid the galaxy of all intelligent life forms other than their own.
-From the GaLakTik TakTiK rulebook
 
GaLakTik TakTik Conversion Notes and Standard Ship Classifications

 

Konfederation X The Konfederation was discovered almost simultaneously by Dominion and Colonial Scouts several years ago. It was a major nasty surprise to both. It seems that evil Nazi Scientists managed to launch several manned V-2 Rockets during the final days of the Third Reich. These modified V-2s carried top scientists and generals who were to have established rocket bases on Earth’s Moon and terrorized the Earth with a rain of death in a global "final solution". Peace loving Alpha Centaurians saw the opportunity to rescue some humans from the Holocaust, and saved the entire group believing them all to be innocent scientists fleeing the ravages of war below.  For this kindness the Nazis repaid the Alpha Centaurians with the Revolt of 10228 (GaLakTik Date 1981). The revolt was a bloody success over the peace loving Centaurians. In the two and one half centuries since the revolt, this once peaceful star Empire, renamed The Konfederation X, has sent its Starships and Storm Troopers far and wide to conquer and colonize. A very hot "Cold War" exists between these Empires. Open warfare often breaks out with little provocation. There is only ever grudging cooperation between these powers during dire emergencies, like an attack by Omegans or Pirates. Konfederation X starships are large and menacing with bridge structures that have been said to resemble the "horns" of a charging bull. Kon X ships have massive long range Laser Batteries and strong Defensive Shields, but usually carry no Torpedoes. In other respects these ships are average.
"KAISER" class Starship Item# 7712 - BC Mass 50 NPV / CPV 167/142 Strong Hull 20 (5/5/5/5) 40% Thrust 4 FTL 3 PDS 2 Fire Cons 2 Class 2 Beam Batteries (F/FP/AP, F/FS/AS) 1 Class 3 Beam Battery (FP/F/FS)
"HINDENBURG" class Starship Item# 7711 - BB Mass 74 NPV / CPV 252/233 Strong Hull 28 (7/7/7/7) 38% Thrust 3 FTL Level 1 Screens 4 PDS 2 Fire Cons 3 Class 2 Beam Batteries (F/FP/AP, FP/F/FS, F/FS/AS) 2 Class 3 Beam Battery (F/FP/AP, F/FS/AS)
"BISMARCK" class Starship Item# 7710 - BA Mass 118 NPV / CPV 407/428 Strong Hull 44 (11/11/11/11) 37% Thrust 2 FTL Level 1 Screens 5 PDS 3 Fire Cons 4 Class 2 Beam Batteries (F/FP/AP, 2xFP/F/FS, F/FS/AS) 4 Class 3 Beam Battery (2xF/FP/AP, 2xF/FS/AS) 1 Pulse Torpedo (F)
"H" class Starship Item# 7712 - BM Mass 178 NPV / CPV 616/755 Strong Hull 64 (16/16/16/16) 36% Thrust 2 FTL Level 2 Screens 6 PDS 4 Fire Cons 3 Class 2 Beam Batteries (F/FP/AP, FP/F/FS, F/FS/AS) 4 Class 3 Beam Battery (2xF/FP/AP, 2xF/FS/AS) 1 Class 4 Beam Battery (FP/F/FS) 2 Pulse Torpedoes (F)
Konfederation Planet Assault Transport Item# 7713 - TT Mass 166 NPV / CPV 517/479 Strong Hull 56 (14/14/14/14) 34% Thrust 2 FTL Level 1 Screens 5 PDS 3 Fire Cons 3 Class 2 Beam Batteries (F/FP/AP, FP/F/FS, F/FS/AS) 2 Class 3 Beam Battery (F/FP/AP, F/FS/AS) 1 Pulse Torpedo (F) 20 Mass Troops 2 Boat Bays - hold 6 Mass each
"GRAF ZEPPELIN" class Starship Item# 7805 - CV Mass 150 NPV / CPV 511/419 Ave Hull 46 (12/12/11/11) 31% Thrust 4 FTL 5 PDS 2 Fire Cons 2 Class 2 Beam Batteries (F/FP/AP, F/FS/AS) 2 Class 3 Beam Battery (F/FP/AP, F/FS/AS) 4 Fighter Bays
Konfederation Space Defense Star Station Item# 7819 - SB

 
GaLakTik TakTik Conversion Notes
Ship Name:  The name of the miniatures changed a bit over time so I have combined/consolidated them for clarity.
Ship Classifications:  See table below. A miniature's name in the product list often does not match the classification indicated.
Systems and Stats: These are  based on the stats for the miniature in the GaLakTik TakTik rules.
Weapons: GT Beams roughly convert to FT Beam weapons.  GT Torpedoes convert to the other weapons on the ship which vary in order to add more flavor between fleets using the Empire's background as a guide..
Screens: Based on GT Shield rating - <20 = 0, 20-35=1, 36+=2.
Thrust: Usually equal to GT ship design's Tactical Manuver rating.
Miniature Identification: I have most of these miniatures but I am missing some plus several are loose so I have tried to determine the correct item number for those miniatures but may be incorrect.
 
GaLakTik TakTik Standard Starship Classifications

BM - Behemoth	BA - Super Dreadnought	BB - Dreadnought	BC - BattleCruiser
CA - Heavy Star Cruiser	CL - Scout Cruiser	DD - Destroyer	DE - Frigate
CV - Fighter Carrier	FF - Fighter	SB - Star Base	RR - Space Raider
SR - Research	TT - Transport