In this case, "Ancient Gear Catapult" is used to destroy "Geartown" and Special Summon an "Ancient Gear" monster, whereafter the effect of "Geartown" should also be used to Special Summon a different "Ancient Gear" monster. At least 1 of these monsters should be "Ancient Gear Wyvern", so that its effect can be triggered to add "Ancient Gear Box" to the hand, whose effect should also be triggered to add a different "Ancient Gear" monster to the hand.
If "Machine Duplication" is available for use, then the other Special Summoned "Ancient Gear" monster should be "Ancient Gear Gadget", so that more copies of "Ancient Gear Gadget" can be produced, which can then use their effects to treat themselves as different "Gadget" monsters. Overall, this provides another 2 differently-named cards for this card's Special Summon.
This card's effect can easily produce an OTK if it shuffles a face-up "Serpentine Princess" from the field to the Deck (with the effect, not during the Summoning procedure). Its effect can be used to Special Summon "Speedroid Terrortop". Then, the effect of "Terrortop" can be used to search "Speedroid Taketomborg", which in turn can use its effect to Special Summon "Speedroid Red-Eyed Dice". The effect of "Red-Eyed Dice" can be used to make "Terrortop" Level 4, setting up the Synchro Summon of "Hi-Speedroid Chanbara". The ATK-gaining effect of "Chanbara" combined with its ability to attack twice yields a total amount of 4600 battle damage, plus this card's ATK, resulting in 8000 battle damage.