Select 3 copies of the same Equip Spell Card, so that it is guaranteed to be added to the hand.
Equip "Power Tool Dragon" with "Double Tool C&D" or "Raregold Armor" to force the opponent to always attack "Power Tool Dragon". While "The Dark Door" is on the field, the opponent will only be able to attack once per turn and thus will have a difficult time getting past "Power Tool Dragon"..
Equip this card with "Malevolent Nuzzler" to increase this monsters ATK by 700 and if the Equip Card is destroyed you can pay 500 Life Points to place it on top of your Deck and be the next card you draw to equip it to "Power Tool Dragon" again and repeat.
Equip this card with "Mist Body" to prevent it from being destroyed by battle. In that case, it cannot be destroyed by card effects except by destroying "Mist Body" first.
If "Power Tool Dragon" is used in a deck with monsters whose ATKs are low, a good card to use is "Armed Changer". With it, monsters in the Graveyard can be easily retrieved. This is a great combo to use in a "Morphtronic" Deck, as all "Morphtronic" monsters have lower Original ATK than "Power Tool Dragon".
Use this card in a "Morphtronic" Deck that has multiple copies of "Double Tool C&D", "Morphtronic Cord" and "Morphtronic Repair Unit". When using the effect of "Power Tool Dragon", choose one of these cards based on what you need at the moment; a beatstick, a monster from the Graveyard, or Spell/Trap destruction, respectively. This essentially creates an Equip Spell Toolbox.
Equip this card with "Armory Arm" to have it gain an extra 1000 ATK and the ability to inflict burn damage. It can be sent to the Graveyard to prevent the destruction of "Power Tool Dragon".
Run three copies of "Mage Power", with this card. For each Equipped Spell, each copy of "Mage Power" will increase the ATK of "Power Tool Dragon" by 500.
Combine this card with "Archfiend of Gilfer"; every time "Power Tool Dragon" would be destroyed, send it to the Graveyard by the effect of "Power Tool Dragon". This will activate its effect so that it can be equipped back onto "Power Tool Dragon", thus providing a powerful defense. Keep in mind that "Archfiend of Gilfer" is able to miss the timing if sending it to the Graveyard with the effect of "Power Tool Dragon" is not the last thing to happen.
NOTE: "Butterfly Dagger - Elma" is not destroyed in the case when "Power Tool Dragon" uses its effect and therefore will not be able to activate its effect so it cannot effectively be used in place of "Archfiend of Gilfer".
If this card is used in a "Morphtronic" Deck, an easy way to summon "Power Tool Dragon" is to use "Morphtronic Scopen" and Special Summon a Level 4 "Morphtronic" monster with its effect.
Use this card with "Phoenix Gearfried" so that "Power Tool Dragon" is protected from Spell and Trap Cards. "Phoenix Gearfried" can also be powered up with the equip cards acquired from using the effect of "Power Tool Dragon".
Use this card with "Evocator Chevalier", to destroy 1 card the opponent controls each turn.
This card can easily be splashed into a "Vylon" themed Deck since both this card and that archetype rely on Equip Spells. In addition to that, the Vylon Synchro Monsters can be splashed into the Extra Deck of most "Morphtronic" or "Power Tool" themed Decks.
This card can be very useful in a "Dragunity" Deck with "Dragon Mastery". That way a Dragon-Type "Dragunity" monster can be equipped to "Power Tool Dragon" each turn, "Power Tool Dragon" will gain 500 ATK, be able to negate being destroyed, and use the effects of the equipped "Dragunity" monsters.
A good "Dragunity" card to equip to "Power Tool Dragon" is "Dragunity Aklys". Whenever "Power Tool Dragon" would be destroyed, send "Aklys" to the Graveyard to negate destruction, then you can activate the effect of "Aklys" to destroy a card on the field.
Use this card with "Black Pendant". If "Power Tool Dragon" would be destroyed you can send "Black Pendant" to the Graveyard to deal 500 damage to your opponent instead.
An easiest way to Summon this card is to Normal Summon "Marauding Captain", and use its effect to Special Summon a "Vylon Prism" from the hand. Tune them and equip "Power Tool Dragon" immediately through the effect of "Vylon Prism".
This card is still vulnerable to cards that can return it to the Extra Deck (such as "Gundari") or banish it; be sure to have ways to protect it from forms of removal other than destruction.