Congratulations on your new doll !
Nothing better than a new project.
Opening a new box with a used doll can either be a window into an owners unfulfilled dreams and desires, or the stunning results of abject abandonment.
I think you have the abandonment situation here.
You did the right thing applying oil and letting soak in. Probably do it again.
Cracks like that usually result from the oil leeching from the base TPE to such an extent that the surface layer has no excess oil and it cracks.
So another round of oil to allow it to go deep would be a good thing to do.
The cure to the cracks it to well ... close them up.
You can use either heat (soldering iron), chemicals (3m 94 Primer) or a combination of both.
In this case a combination method would be the best way to go.
Tooling needs include a fine bladed soldering iron such as
HERE (viewtopic.php?p=2331620#p2331620) or HERE (viewtopic.php?p=2275376#p2275376), some real 39 94 primer as noted
HERE (viewtopic.php?p=2341893#p2341893) and a what I consider a "TPE Smoothing Wand". This is actually a wide temperature controlled leather or shoe tool as mentioned
HERE (viewtopic.php?p=2447051#p2447051). As a note you CAN find the leather tools for about 1/2 the Amazon price if you root around AliExpress. Also some baby oil, iso propyl alcohol, a small glass bowl, small brush and your favorite smoothing and retexture stuff.
Your goal is to get the lower levels of the crack to bond together with chemicals, then fuse and smooth the upper parts with heat.
First mist the target areas with iso alcohol to remove a bit of the oil on the crack surfaces that will be bonded by the 3M 94. Let that dry.
Then decant the 3M 94 Primer into the bowl and use the brush to apply to some to each crack. Jab the brush deep into the crack getting to the bottom. Be liberal but don't just slater it on and watch for drips. You will be moving quickly and using more than just a drop, so it is easy to get 3M 94 on unwanted places. If that happens then mist or pour some iso alcohol immediacy on the excess to dilute the 3M 94 and reduce the chance of surface damage.
When done position the doll in a neutral pose which will force the cracks together as much as they will close. Don't apply pressure to force the cracks closed. Leave alone for 12-24 ours to form a good bond.
While the 3M 94 is curing, take your TPE smoothing wand to a test area of the doll and find the right smoothing temperature setting for your blend of TPE. The target temperature should be relatively high and one that melts about 1mm to 2mm of the TPE surface. This works since TPE does not diffuse heat rapidly and thus you can get localized hot spots for melting without wider deformation for the doll. If your determined temperature causes the TPE to smoke or liquefy and run when applied, then back it down. That is too hot.
Once the 3M 94 has cured, preheat your smoothing wand to the determined temperature. While it is preheating, mist or brush on some baby oil or mineral oil to the target crack area. Take the heated smoothing wand and GENTLY GLIDE it over the areas. Do not just jab it or force it into the TPE, that will create divots. Use several passes to let the heat build up and melting and flowing work. At the higher heat setting you want to move slowly but continuously. Practice it first. Using one arm to support your smoothing hand can make it easier to get an even and consistent pass of the tool.
When complete your cracks should bonded from the bottom up and melt fused from the skin down to about 1mm to 2mm. Enough for reasonable antics if the doll is kept oiled and treated well.
The butt areas, being smooth and large, should not be too difficult. Use care where the butt meets the thigh.
Watch the edge of the smoothing tool to make sure it does not dig in. Transition areas such as that can bite you if you are not careful.
Cracks in detail areas such the anus and vagina can be done in a similar way. Use 3M 94 for the depth and heat for the surface. Detail areas will need a smaller tool for surface work, such as the edge of a soldering iron. Smaller cracks with are almost closed (like some of the anus and vag cracks in the last image) might only need a small amount of 3M 94 to seal up.
Practice and have fun knowing that you can't make her worse !
Cheers!
... W ...
